616506634 has 16 divisors (see below), whose sum is σ = 932185800. Its totient is φ = 305786880.

The previous prime is 616506629. The next prime is 616506659. The reversal of 616506634 is 436605616.

It can be written as a sum of positive squares in 4 ways, for example, as 268796025 + 347710609 = 16395^2 + 18647^2 .

It is a junction number, because it is equal to n+sod(n) for n = 616506593 and 616506602.

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, 160642 + ... + 164434.

Almost surely, 2^616506634 is an apocalyptic number.

616506634 is a deficient number, since it is larger than the sum of its proper divisors (315679166).

616506634 is a wasteful number, since it uses less digits than its factorization.

616506634 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4425.

The product of its (nonzero) digits is 77760, while the sum is 37.

The square root of 616506634 is about 24829.5516270431. The cubic root of 616506634 is about 851.0973757246.

The spelling of 616506634 in words is "six hundred sixteen million, five hundred six thousand, six hundred thirty-four".