616640422 has 32 divisors (see below), whose sum is σ = 991418400. Its totient is φ = 286640640.

The previous prime is 616640377. The next prime is 616640429. The reversal of 616640422 is 224046616.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (616640429) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 1766704 + ... + 1767052.

It is an arithmetic number, because the mean of its divisors is an integer number (30981825).

Almost surely, 2^616640422 is an apocalyptic number.

616640422 is a deficient number, since it is larger than the sum of its proper divisors (374777978).

616640422 is a wasteful number, since it uses less digits than its factorization.

616640422 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 856.

The product of its (nonzero) digits is 13824, while the sum is 31.

The square root of 616640422 is about 24832.2456092879. The cubic root of 616640422 is about 851.1589367707.

The spelling of 616640422 in words is "six hundred sixteen million, six hundred forty thousand, four hundred twenty-two".