6610061565 has 64 divisors (see below), whose sum is σ = 12061370880. Its totient is φ = 3433466880.

The previous prime is 6610061561. The next prime is 6610061573. The reversal of 6610061565 is 5651600166.

It is not a de Polignac number, because 6610061565 - 2² = 6610061561 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 (6610061561) by changing a digit.

It is a polite number, since it can be written in 63 ways as a sum of consecutive naturals, for example, 844309 + ... + 852101.

It is an arithmetic number, because the mean of its divisors is an integer number (188458920).

Almost surely, 2^6610061565 is an apocalyptic number.

It is an amenable number.

6610061565 is a deficient number, since it is larger than the sum of its proper divisors (5451309315).

6610061565 is a wasteful number, since it uses less digits than its factorization.

6610061565 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 7971 (or 7965 counting only the distinct ones).

The product of its (nonzero) digits is 32400, while the sum is 36.

The square root of 6610061565 is about 81302.2851154874. The cubic root of 6610061565 is about 1876.7301661889.

The spelling of 6610061565 in words is "six billion, six hundred ten million, sixty-one thousand, five hundred sixty-five".