621970958 has 32 divisors (see below), whose sum is σ = 1087236864. Its totient is φ = 261358272.

The previous prime is 621970957. The next prime is 621970967. The reversal of 621970958 is 859079126.

It is a Curzon number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (621970957) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 157241 + ... + 161147.

It is an arithmetic number, because the mean of its divisors is an integer number (33976152).

Almost surely, 2^621970958 is an apocalyptic number.

621970958 is a deficient number, since it is larger than the sum of its proper divisors (465265906).

621970958 is a wasteful number, since it uses less digits than its factorization.

621970958 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 4136.

The product of its (nonzero) digits is 272160, while the sum is 47.

The square root of 621970958 is about 24939.3455808287. The cubic root of 621970958 is about 853.6045122361.

It can be divided in two parts, 6219 and 70958, that added together give a palindrome (77177).

The spelling of 621970958 in words is "six hundred twenty-one million, nine hundred seventy thousand, nine hundred fifty-eight".