616879551 has 16 divisors (see below), whose sum is σ = 832608000. Its totient is φ = 406219008.

The previous prime is 616879477. The next prime is 616879603. The reversal of 616879551 is 155978616.

It is not a de Polignac number, because 616879551 - 2¹⁰ = 616878527 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 616879551.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (616879451) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 172540 + ... + 176078.

It is an arithmetic number, because the mean of its divisors is an integer number (52038000).

Almost surely, 2^616879551 is an apocalyptic number.

616879551 is a deficient number, since it is larger than the sum of its proper divisors (215728449).

616879551 is a wasteful number, since it uses less digits than its factorization.

616879551 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 4238.

The product of its digits is 453600, while the sum is 48.

The square root of 616879551 is about 24837.0600313322. The cubic root of 616879551 is about 851.2689471181.

The spelling of 616879551 in words is "six hundred sixteen million, eight hundred seventy-nine thousand, five hundred fifty-one".