621136716 has 48 divisors (see below), whose sum is σ = 1487390688. Its totient is φ = 201625600.

The previous prime is 621136697. The next prime is 621136717. The reversal of 621136716 is 617631126.

It is not an unprimeable number, because it can be changed into a prime (621136717) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 432736 + ... + 434168.

It is an arithmetic number, because the mean of its divisors is an integer number (30987306).

Almost surely, 2^621136716 is an apocalyptic number.

It is an amenable number.

621136716 is an abundant number, since it is smaller than the sum of its proper divisors (866253972).

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

621136716 is a wasteful number, since it uses less digits than its factorization.

621136716 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2362 (or 2360 counting only the distinct ones).

The product of its digits is 9072, while the sum is 33.

The square root of 621136716 is about 24922.6145498421. The cubic root of 621136716 is about 853.2226983982. Note that the first 3 decimals are identical.

The spelling of 621136716 in words is "six hundred twenty-one million, one hundred thirty-six thousand, seven hundred sixteen".