616782428 has 6 divisors (see below), whose sum is σ = 1079369256. Its totient is φ = 308391212.

The previous prime is 616782403. The next prime is 616782433. The reversal of 616782428 is 824287616.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 77097800 + ... + 77097807.

It is an arithmetic number, because the mean of its divisors is an integer number (179894876).

Almost surely, 2^616782428 is an apocalyptic number.

It is an amenable number.

616782428 is a deficient number, since it is larger than the sum of its proper divisors (462586828).

616782428 is a wasteful number, since it uses less digits than its factorization.

616782428 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 154195611 (or 154195609 counting only the distinct ones).

The product of its digits is 258048, while the sum is 44.

The square root of 616782428 is about 24835.1047511381. The cubic root of 616782428 is about 851.2242694965.

The spelling of 616782428 in words is "six hundred sixteen million, seven hundred eighty-two thousand, four hundred twenty-eight".