662811240 has 576 divisors, whose sum is σ = 2703715200. Its totient is φ = 129153024.

The previous prime is 662811239. The next prime is 662811241. The reversal of 662811240 is 42118266.

It is an interprime number because it is at equal distance from previous prime (662811239) and next prime (662811241).

It is a Harshad number since it is a multiple of its sum of digits (30).

It is a junction number, because it is equal to n+sod(n) for n = 662811198 and 662811207.

It is not an unprimeable number, because it can be changed into a prime (662811241) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 143 ways as a sum of consecutive naturals, for example, 22855546 + ... + 22855574.

It is an arithmetic number, because the mean of its divisors is an integer number (4693950).

Almost surely, 2^662811240 is an apocalyptic number.

662811240 is a gapful number since it is divisible by the number (60) formed by its first and last digit.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 662811240, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (1351857600).

662811240 is an abundant number, since it is smaller than the sum of its proper divisors (2040903960).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

662811240 is a wasteful number, since it uses less digits than its factorization.

662811240 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 106 (or 82 counting only the distinct ones).

The product of its (nonzero) digits is 4608, while the sum is 30.

The square root of 662811240 is about 25745.1207027662. The cubic root of 662811240 is about 871.8931952627.

The spelling of 662811240 in words is "six hundred sixty-two million, eight hundred eleven thousand, two hundred forty".