621955034 has 4 divisors (see below), whose sum is σ = 932932554. Its totient is φ = 310977516.

The previous prime is 621955031. The next prime is 621955039. The reversal of 621955034 is 430559126.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in only one way, i.e., 603439225 + 18515809 = 24565^2 + 4303^2 .

It is a junction number, because it is equal to n+sod(n) for n = 621954985 and 621955003.

It is not an unprimeable number, because it can be changed into a prime (621955031) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 155488757 + ... + 155488760.

Almost surely, 2^621955034 is an apocalyptic number.

621955034 is a deficient number, since it is larger than the sum of its proper divisors (310977520).

621955034 is a wasteful number, since it uses less digits than its factorization.

621955034 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 310977519.

The product of its (nonzero) digits is 32400, while the sum is 35.

The square root of 621955034 is about 24939.0263242172. The cubic root of 621955034 is about 853.5972273760.

The spelling of 621955034 in words is "six hundred twenty-one million, nine hundred fifty-five thousand, thirty-four".