616612646 has 16 divisors (see below), whose sum is σ = 1017261504. Its totient is φ = 278534784.

The previous prime is 616612639. The next prime is 616612649. The reversal of 616612646 is 646216616.

It is a super-2 number, since 2×616612646² = 760422310414242632, which contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (616612649) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 251075 + ... + 253518.

It is an arithmetic number, because the mean of its divisors is an integer number (63578844).

Almost surely, 2^616612646 is an apocalyptic number.

616612646 is a deficient number, since it is larger than the sum of its proper divisors (400648858).

616612646 is a wasteful number, since it uses less digits than its factorization.

616612646 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 504655.

The product of its digits is 62208, while the sum is 38.

The square root of 616612646 is about 24831.6863301710. The cubic root of 616612646 is about 851.1461566887.

The spelling of 616612646 in words is "six hundred sixteen million, six hundred twelve thousand, six hundred forty-six".