616601505 has 16 divisors (see below), whose sum is σ = 1062452160. Its totient is φ = 303557568.

The previous prime is 616601497. The next prime is 616601521. The reversal of 616601505 is 505106616.

It is not a de Polignac number, because 616601505 - 2³ = 616601497 is a prime.

It is a Curzon number.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 1580835 + ... + 1581224.

It is an arithmetic number, because the mean of its divisors is an integer number (66403260).

Almost surely, 2^616601505 is an apocalyptic number.

616601505 is a gapful number since it is divisible by the number (65) formed by its first and last digit.

It is an amenable number.

616601505 is a deficient number, since it is larger than the sum of its proper divisors (445850655).

616601505 is a wasteful number, since it uses less digits than its factorization.

616601505 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3162080.

The product of its (nonzero) digits is 5400, while the sum is 30.

The square root of 616601505 is about 24831.4619988433. The cubic root of 616601505 is about 851.1410304686.

The spelling of 616601505 in words is "six hundred sixteen million, six hundred one thousand, five hundred five".