61712870 has 32 divisors (see below), whose sum is σ = 115521120. Its totient is φ = 23708160.

The previous prime is 61712851. The next prime is 61712951. The reversal of 61712870 is 7821716.

61712870 is nontrivially palindromic in base 15.

It is a Curzon number.

It is a congruent 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, 69449 + ... + 70331.

It is an arithmetic number, because the mean of its divisors is an integer number (3610035).

Almost surely, 2^61712870 is an apocalyptic number.

61712870 is a deficient number, since it is larger than the sum of its proper divisors (53808250).

61712870 is a wasteful number, since it uses less digits than its factorization.

61712870 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1160.

The product of its (nonzero) digits is 4704, while the sum is 32.

The square root of 61712870 is about 7855.7539421751. The cubic root of 61712870 is about 395.1772317946.

The spelling of 61712870 in words is "sixty-one million, seven hundred twelve thousand, eight hundred seventy".