662249940 has 144 divisors (see below), whose sum is σ = 2145917760. Its totient is φ = 152064000.

The previous prime is 662249927. The next prime is 662249953. The reversal of 662249940 is 49942266.

662249940 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is an interprime number because it is at equal distance from previous prime (662249927) and next prime (662249953).

It is a junction number, because it is equal to n+sod(n) for n = 662249892 and 662249901.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 47 ways as a sum of consecutive naturals, for example, 135540 + ... + 140340.

Almost surely, 2^662249940 is an apocalyptic number.

662249940 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 662249940, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (1072958880).

662249940 is an abundant number, since it is smaller than the sum of its proper divisors (1483667820).

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

662249940 is a wasteful number, since it uses less digits than its factorization.

662249940 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 4854 (or 4841 counting only the distinct ones).

The product of its (nonzero) digits is 186624, while the sum is 42.

The square root of 662249940 is about 25734.2172991525. The cubic root of 662249940 is about 871.6470055819.

The spelling of 662249940 in words is "six hundred sixty-two million, two hundred forty-nine thousand, nine hundred forty".