616620630 has 64 divisors (see below), whose sum is σ = 1501156800. Its totient is φ = 162086400.

The previous prime is 616620619. The next prime is 616620637. The reversal of 616620630 is 36026616.

It is a Harshad number since it is a multiple of its sum of digits (30).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (616620637) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 879280 + ... + 879980.

It is an arithmetic number, because the mean of its divisors is an integer number (23455575).

Almost surely, 2^616620630 is an apocalyptic number.

616620630 is an abundant number, since it is smaller than the sum of its proper divisors (884536170).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

616620630 is a wasteful number, since it uses less digits than its factorization.

616620630 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1089.

The product of its (nonzero) digits is 7776, while the sum is 30.

The square root of 616620630 is about 24831.8470919906. The cubic root of 616620630 is about 851.1498302654.

It can be divided in two parts, 6166 and 20630, that added together give a triangular number (26796 = T₂₃₁).

The spelling of 616620630 in words is "six hundred sixteen million, six hundred twenty thousand, six hundred thirty".