621407896 has 64 divisors (see below), whose sum is σ = 1244770560. Its totient is φ = 290304000.

The previous prime is 621407893. The next prime is 621407903. The reversal of 621407896 is 698704126.

It is a super-2 number, since 2×621407896² = 772295546422293632, which contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (621407893) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 2211276 + ... + 2211556.

It is an arithmetic number, because the mean of its divisors is an integer number (19449540).

Almost surely, 2^621407896 is an apocalyptic number.

It is an amenable number.

621407896 is a primitive abundant number, since it is smaller than the sum of its proper divisors, none of which is abundant.

621407896 is a wasteful number, since it uses less digits than its factorization.

621407896 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 596 (or 592 counting only the distinct ones).

The product of its (nonzero) digits is 145152, while the sum is 43.

The square root of 621407896 is about 24928.0543966030. The cubic root of 621407896 is about 853.3468488799.

The spelling of 621407896 in words is "six hundred twenty-one million, four hundred seven thousand, eight hundred ninety-six".