61707965 has 16 divisors (see below), whose sum is σ = 84295296. Its totient is φ = 42926400.

The previous prime is 61707959. The next prime is 61707973. The reversal of 61707965 is 56970716.

It is not a de Polignac number, because 61707965 - 2¹⁰ = 61706941 is a prime.

It is a Duffinian number.

It is a Curzon number.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 23126 + ... + 25655.

It is an arithmetic number, because the mean of its divisors is an integer number (5268456).

Almost surely, 2^61707965 is an apocalyptic number.

It is an amenable number.

61707965 is a deficient number, since it is larger than the sum of its proper divisors (22587331).

61707965 is a wasteful number, since it uses less digits than its factorization.

61707965 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 48820.

The product of its (nonzero) digits is 79380, while the sum is 41.

The square root of 61707965 is about 7855.4417444215. The cubic root of 61707965 is about 395.1667618247.

The spelling of 61707965 in words is "sixty-one million, seven hundred seven thousand, nine hundred sixty-five".