621656102 has 8 divisors (see below), whose sum is σ = 987336216. Its totient is φ = 292544032.

The previous prime is 621656099. The next prime is 621656107. The reversal of 621656102 is 201656126.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (621656107) 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 3 ways as a sum of consecutive naturals, for example, 9141968 + ... + 9142035.

It is an arithmetic number, because the mean of its divisors is an integer number (123417027).

Almost surely, 2^621656102 is an apocalyptic number.

621656102 is a deficient number, since it is larger than the sum of its proper divisors (365680114).

621656102 is a wasteful number, since it uses less digits than its factorization.

621656102 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 18284022.

The product of its (nonzero) digits is 4320, while the sum is 29.

The square root of 621656102 is about 24933.0323466681. The cubic root of 621656102 is about 853.4604498471.

The spelling of 621656102 in words is "six hundred twenty-one million, six hundred fifty-six thousand, one hundred two".