61711265 has 32 divisors (see below), whose sum is σ = 93415680. Its totient is φ = 38016000.

The previous prime is 61711249. The next prime is 61711267. The reversal of 61711265 is 56211716.

It is not a de Polignac number, because 61711265 - 2⁴ = 61711249 is a prime.

It is not an unprimeable number, because it can be changed into a prime (61711267) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 33365 + ... + 35165.

It is an arithmetic number, because the mean of its divisors is an integer number (2919240).

Almost surely, 2^61711265 is an apocalyptic number.

It is an amenable number.

61711265 is a deficient number, since it is larger than the sum of its proper divisors (31704415).

61711265 is a wasteful number, since it uses less digits than its factorization.

61711265 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1913.

The product of its digits is 2520, while the sum is 29.

The square root of 61711265 is about 7855.6517870893. The cubic root of 61711265 is about 395.1738059022.

The spelling of 61711265 in words is "sixty-one million, seven hundred eleven thousand, two hundred sixty-five".