621605092 has 12 divisors (see below), whose sum is σ = 1089075456. Its totient is φ = 310440680.

The previous prime is 621605077. The next prime is 621605093. The reversal of 621605092 is 290506126.

It is not an unprimeable number, because it can be changed into a prime (621605093) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 86584 + ... + 93487.

It is an arithmetic number, because the mean of its divisors is an integer number (90756288).

Almost surely, 2^621605092 is an apocalyptic number.

It is an amenable number.

621605092 is a deficient number, since it is larger than the sum of its proper divisors (467470364).

621605092 is a wasteful number, since it uses less digits than its factorization.

621605092 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 180938 (or 180936 counting only the distinct ones).

The product of its (nonzero) digits is 6480, while the sum is 31.

The square root of 621605092 is about 24932.0093855269. The cubic root of 621605092 is about 853.4371056389.

The spelling of 621605092 in words is "six hundred twenty-one million, six hundred five thousand, ninety-two".