621084676 has 12 divisors (see below), whose sum is σ = 1104716620. Its totient is φ = 305451360.

The previous prime is 621084661. The next prime is 621084679. The reversal of 621084676 is 676480126.

It can be written as a sum of positive squares in 2 ways, for example, as 211993600 + 409091076 = 14560^2 + 20226^2 .

It is a hoax number, since the sum of its digits (40) coincides with the sum of the digits of its distinct prime factors.

It is not an unprimeable number, because it can be changed into a prime (621084679) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 1272471 + ... + 1272958.

Almost surely, 2^621084676 is an apocalyptic number.

It is an amenable number.

621084676 is a deficient number, since it is larger than the sum of its proper divisors (483631944).

621084676 is a wasteful number, since it uses less digits than its factorization.

621084676 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2545494 (or 2545492 counting only the distinct ones).

The product of its (nonzero) digits is 96768, while the sum is 40.

The square root of 621084676 is about 24921.5704962589. The cubic root of 621084676 is about 853.1988695330.

The spelling of 621084676 in words is "six hundred twenty-one million, eighty-four thousand, six hundred seventy-six".