616690605 has 16 divisors (see below), whose sum is σ = 1029605760. Its totient is φ = 314601408.

The previous prime is 616690603. The next prime is 616690631. The reversal of 616690605 is 506096616.

It is not a de Polignac number, because 616690605 - 2¹ = 616690603 is a prime.

It is a Curzon number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (616690601) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 893410 + ... + 894099.

It is an arithmetic number, because the mean of its divisors is an integer number (64350360).

Almost surely, 2^616690605 is an apocalyptic number.

It is an amenable number.

616690605 is a deficient number, since it is larger than the sum of its proper divisors (412915155).

616690605 is a wasteful number, since it uses less digits than its factorization.

616690605 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1787540.

The product of its (nonzero) digits is 58320, while the sum is 39.

The square root of 616690605 is about 24833.2560289625. The cubic root of 616690605 is about 851.1820256184.

The spelling of 616690605 in words is "six hundred sixteen million, six hundred ninety thousand, six hundred five".