662631840 has 672 divisors, whose sum is σ = 2776394880. Its totient is φ = 147806208.

The previous prime is 662631793. The next prime is 662631901. The reversal of 662631840 is 48136266.

It is a Harshad number since it is a multiple of its sum of digits (36).

It is a junction number, because it is equal to n+sod(n) for n = 662631795 and 662631804.

It is an unprimeable number.

It is a polite number, since it can be written in 111 ways as a sum of consecutive naturals, for example, 28810069 + ... + 28810091.

It is an arithmetic number, because the mean of its divisors is an integer number (4131540).

Almost surely, 2^662631840 is an apocalyptic number.

662631840 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 662631840, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (1388197440).

662631840 is an abundant number, since it is smaller than the sum of its proper divisors (2113763040).

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

662631840 is a wasteful number, since it uses less digits than its factorization.

662631840 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 88 (or 65 counting only the distinct ones).

The product of its (nonzero) digits is 41472, while the sum is 36.

The square root of 662631840 is about 25741.6363116256. The cubic root of 662631840 is about 871.8145244214.

The spelling of 662631840 in words is "six hundred sixty-two million, six hundred thirty-one thousand, eight hundred forty".