621818942 has 8 divisors (see below), whose sum is σ = 932834232. Its totient is φ = 310874200.

The previous prime is 621818941. The next prime is 621818959. The reversal of 621818942 is 249818126.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a self number, because there is not a number n which added to its sum of digits gives 621818942.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (621818941) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 25592 + ... + 43572.

It is an arithmetic number, because the mean of its divisors is an integer number (116604279).

Almost surely, 2^621818942 is an apocalyptic number.

621818942 is a deficient number, since it is larger than the sum of its proper divisors (311015290).

621818942 is a wasteful number, since it uses less digits than its factorization.

621818942 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 35274.

The product of its digits is 55296, while the sum is 41.

The square root of 621818942 is about 24936.2976802893. The cubic root of 621818942 is about 853.5349633743.

The spelling of 621818942 in words is "six hundred twenty-one million, eight hundred eighteen thousand, nine hundred forty-two".