621452932 has 6 divisors (see below), whose sum is σ = 1087542638. Its totient is φ = 310726464.

The previous prime is 621452929. The next prime is 621452981. The reversal of 621452932 is 239254126.

It can be written as a sum of positive squares in only one way, i.e., 621305476 + 147456 = 24926^2 + 384^2 .

It is an unprimeable number.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 77681613 + ... + 77681620.

Almost surely, 2^621452932 is an apocalyptic number.

It is an amenable number.

621452932 is a deficient number, since it is larger than the sum of its proper divisors (466089706).

621452932 is a wasteful number, since it uses less digits than its factorization.

621452932 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 155363237 (or 155363235 counting only the distinct ones).

The product of its digits is 25920, while the sum is 34.

The square root of 621452932 is about 24928.9576998317. The cubic root of 621452932 is about 853.3674635736.

The spelling of 621452932 in words is "six hundred twenty-one million, four hundred fifty-two thousand, nine hundred thirty-two".