616828578 has 32 divisors (see below), whose sum is σ = 1374978240. Its totient is φ = 183329280.

The previous prime is 616828577. The next prime is 616828601. The reversal of 616828578 is 875828616.

It is a Harshad number since it is a multiple of its sum of digits (51).

It is a self number, because there is not a number n which added to its sum of digits gives 616828578.

It is not an unprimeable number, because it can be changed into a prime (616828577) 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 15 ways as a sum of consecutive naturals, for example, 157203 + ... + 161078.

It is an arithmetic number, because the mean of its divisors is an integer number (42968070).

Almost surely, 2^616828578 is an apocalyptic number.

616828578 is an abundant number, since it is smaller than the sum of its proper divisors (758149662).

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

616828578 is a wasteful number, since it uses less digits than its factorization.

616828578 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 318322.

The product of its digits is 1290240, while the sum is 51.

The square root of 616828578 is about 24836.0338621125. The cubic root of 616828578 is about 851.2454995762.

The spelling of 616828578 in words is "six hundred sixteen million, eight hundred twenty-eight thousand, five hundred seventy-eight".