621697460 has 24 divisors (see below), whose sum is σ = 1306609920. Its totient is φ = 248479904.

The previous prime is 621697451. The next prime is 621697469. The reversal of 621697460 is 64796126.

It is an interprime number because it is at equal distance from previous prime (621697451) and next prime (621697469).

It is a super-4 number, since 4×621697460⁴ (a number of 36 digits) contains 4444 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (621697469) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 14597 + ... + 38163.

It is an arithmetic number, because the mean of its divisors is an integer number (54442080).

Almost surely, 2^621697460 is an apocalyptic number.

It is an amenable number.

621697460 is an abundant number, since it is smaller than the sum of its proper divisors (684912460).

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

621697460 is a wasteful number, since it uses less digits than its factorization.

621697460 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 24895 (or 24893 counting only the distinct ones).

The product of its (nonzero) digits is 108864, while the sum is 41.

The square root of 621697460 is about 24933.8617145439. The cubic root of 621697460 is about 853.4793759781.

The spelling of 621697460 in words is "six hundred twenty-one million, six hundred ninety-seven thousand, four hundred sixty".