616881092 has 6 divisors (see below), whose sum is σ = 1079541918. Its totient is φ = 308440544.

The previous prime is 616881073. The next prime is 616881143. The reversal of 616881092 is 290188616.

It can be written as a sum of positive squares in only one way, i.e., 509675776 + 107205316 = 22576^2 + 10354^2 .

It is a super-2 number, since 2×616881092² = 761084563334224928, which contains 22 as substring.

It is an unprimeable number.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 77110133 + ... + 77110140.

It is an arithmetic number, because the mean of its divisors is an integer number (179923653).

Almost surely, 2^616881092 is an apocalyptic number.

It is an amenable number.

616881092 is a deficient number, since it is larger than the sum of its proper divisors (462660826).

616881092 is a wasteful number, since it uses less digits than its factorization.

616881092 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 154220277 (or 154220275 counting only the distinct ones).

The product of its (nonzero) digits is 41472, while the sum is 41.

The square root of 616881092 is about 24837.0910535030. The cubic root of 616881092 is about 851.2696559568.

The spelling of 616881092 in words is "six hundred sixteen million, eight hundred eighty-one thousand, ninety-two".