621814942 has 16 divisors (see below), whose sum is σ = 1067061600. Its totient is φ = 266218848.

The previous prime is 621814939. The next prime is 621814943. The reversal of 621814942 is 249418126.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (621814943) 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 7 ways as a sum of consecutive naturals, for example, 8317 + ... + 36232.

It is an arithmetic number, because the mean of its divisors is an integer number (66691350).

Almost surely, 2^621814942 is an apocalyptic number.

621814942 is a deficient number, since it is larger than the sum of its proper divisors (445246658).

621814942 is a wasteful number, since it uses less digits than its factorization.

621814942 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 45555.

The product of its digits is 27648, while the sum is 37.

The square root of 621814942 is about 24936.2174757921. The cubic root of 621814942 is about 853.5331331807.

The spelling of 621814942 in words is "six hundred twenty-one million, eight hundred fourteen thousand, nine hundred forty-two".