621326004 has 48 divisors (see below), whose sum is σ = 1562866368. Its totient is φ = 190983168.

The previous prime is 621325993. The next prime is 621326009. The reversal of 621326004 is 400623126.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (621326009) 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, 263559 + ... + 265905.

It is an arithmetic number, because the mean of its divisors is an integer number (32559716).

Almost surely, 2^621326004 is an apocalyptic number.

It is an amenable number.

621326004 is an abundant number, since it is smaller than the sum of its proper divisors (941540364).

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

621326004 is a wasteful number, since it uses less digits than its factorization.

621326004 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 4064 (or 4062 counting only the distinct ones).

The product of its (nonzero) digits is 1728, while the sum is 24.

The square root of 621326004 is about 24926.4117754642. The cubic root of 621326004 is about 853.3093612379.

The spelling of 621326004 in words is "six hundred twenty-one million, three hundred twenty-six thousand, four".