621063426 has 64 divisors (see below), whose sum is σ = 1303780608. Its totient is φ = 197054208.

The previous prime is 621063403. The next prime is 621063427. The reversal of 621063426 is 624360126.

It is a super-2 number, since 2×621063426² = 771439558229714952, which contains 22 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 621063393 and 621063402.

It is not an unprimeable number, because it can be changed into a prime (621063427) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 3589876 + ... + 3590048.

It is an arithmetic number, because the mean of its divisors is an integer number (20371572).

Almost surely, 2^621063426 is an apocalyptic number.

621063426 is an abundant number, since it is smaller than the sum of its proper divisors (682717182).

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

621063426 is a wasteful number, since it uses less digits than its factorization.

621063426 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 475.

The product of its (nonzero) digits is 10368, while the sum is 30.

The square root of 621063426 is about 24921.1441551145. The cubic root of 621063426 is about 853.1891388776.

The spelling of 621063426 in words is "six hundred twenty-one million, sixty-three thousand, four hundred twenty-six".