621402846 has 16 divisors (see below), whose sum is σ = 1266255504. Its totient is φ = 203225984.

The previous prime is 621402841. The next prime is 621402857. The reversal of 621402846 is 648204126.

It is a super-2 number, since 2×621402846² = 772282994033799432, which contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (621402841) 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, 976731 + ... + 977366.

It is an arithmetic number, because the mean of its divisors is an integer number (79140969).

Almost surely, 2^621402846 is an apocalyptic number.

621402846 is an abundant number, since it is smaller than the sum of its proper divisors (644852658).

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

621402846 is a wasteful number, since it uses less digits than its factorization.

621402846 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1954155.

The product of its (nonzero) digits is 18432, while the sum is 33.

The square root of 621402846 is about 24927.9531048981. The cubic root of 621402846 is about 853.3445372403.

The spelling of 621402846 in words is "six hundred twenty-one million, four hundred two thousand, eight hundred forty-six".