621336634 has 8 divisors (see below), whose sum is σ = 957194388. Its totient is φ = 302271840.

The previous prime is 621336607. The next prime is 621336643. The reversal of 621336634 is 436633126.

It can be written as a sum of positive squares in 2 ways, for example, as 620159409 + 1177225 = 24903^2 + 1085^2 .

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

It is a self number, because there is not a number n which added to its sum of digits gives 621336634.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 4198147 + ... + 4198294.

Almost surely, 2^621336634 is an apocalyptic number.

621336634 is a deficient number, since it is larger than the sum of its proper divisors (335857754).

621336634 is a wasteful number, since it uses less digits than its factorization.

621336634 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 8396480.

The product of its digits is 46656, while the sum is 34.

The square root of 621336634 is about 24926.6250021939. The cubic root of 621336634 is about 853.3142275114.

The spelling of 621336634 in words is "six hundred twenty-one million, three hundred thirty-six thousand, six hundred thirty-four".