621442334 has 16 divisors (see below), whose sum is σ = 974257200. Its totient is φ = 296911104.

The previous prime is 621442309. The next prime is 621442373. The reversal of 621442334 is 433244126.

It is a Harshad number since it is a multiple of its sum of digits (29).

It is a junction number, because it is equal to n+sod(n) for n = 621442297 and 621442306.

It is a congruent number.

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, 49604 + ... + 60855.

It is an arithmetic number, because the mean of its divisors is an integer number (60891075).

Almost surely, 2^621442334 is an apocalyptic number.

621442334 is a deficient number, since it is larger than the sum of its proper divisors (352814866).

621442334 is a wasteful number, since it uses less digits than its factorization.

621442334 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 110587.

The product of its digits is 13824, while the sum is 29.

The square root of 621442334 is about 24928.7451348839. The cubic root of 621442334 is about 853.3626125547.

The spelling of 621442334 in words is "six hundred twenty-one million, four hundred forty-two thousand, three hundred thirty-four".