621067404 has 24 divisors (see below), whose sum is σ = 1482859840. Its totient is φ = 202207824.

The previous prime is 621067397. The next prime is 621067439. The reversal of 621067404 is 404760126.

It is a super-2 number, since 2×621067404² = 771449440622598432, which contains 22 as substring.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 601294 + ... + 602325.

Almost surely, 2^621067404 is an apocalyptic number.

It is an amenable number.

621067404 is an abundant number, since it is smaller than the sum of its proper divisors (861792436).

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

621067404 is a wasteful number, since it uses less digits than its factorization.

621067404 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1203669 (or 1203667 counting only the distinct ones).

The product of its (nonzero) digits is 8064, while the sum is 30.

The square root of 621067404 is about 24921.2239667317. The cubic root of 621067404 is about 853.1909604732.

The spelling of 621067404 in words is "six hundred twenty-one million, sixty-seven thousand, four hundred four".