61324865 has 16 divisors (see below), whose sum is σ = 89050752. Its totient is φ = 39577344.

The previous prime is 61324859. The next prime is 61324883. The reversal of 61324865 is 56842316.

It is a cyclic number.

It is not a de Polignac number, because 61324865 - 2⁴ = 61324849 is a prime.

It is a Harshad number since it is a multiple of its sum of digits (35).

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, 50939 + ... + 52128.

It is an arithmetic number, because the mean of its divisors is an integer number (5565672).

Almost surely, 2^61324865 is an apocalyptic number.

It is an amenable number.

61324865 is a deficient number, since it is larger than the sum of its proper divisors (27725887).

61324865 is a wasteful number, since it uses less digits than its factorization.

61324865 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 103096.

The product of its digits is 34560, while the sum is 35.

The square root of 61324865 is about 7831.0194100130. The cubic root of 61324865 is about 394.3472957132.

The spelling of 61324865 in words is "sixty-one million, three hundred twenty-four thousand, eight hundred sixty-five".