621339696 has 120 divisors (see below), whose sum is σ = 1807245440. Its totient is φ = 199065600.

The previous prime is 621339689. The next prime is 621339721. The reversal of 621339696 is 696933126.

It is a happy number.

It is a nude number because it is divisible by every one of its digits.

It is an unprimeable number.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 807600 + ... + 808368.

Almost surely, 2^621339696 is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 621339696, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (903622720).

621339696 is an abundant number, since it is smaller than the sum of its proper divisors (1185905744).

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

621339696 is a wasteful number, since it uses less digits than its factorization.

621339696 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 995 (or 986 counting only the distinct ones).

The product of its digits is 314928, while the sum is 45.

The square root of 621339696 is about 24926.6864223868. The cubic root of 621339696 is about 853.3156292442.

The spelling of 621339696 in words is "six hundred twenty-one million, three hundred thirty-nine thousand, six hundred ninety-six".