61261365 has 16 divisors (see below), whose sum is σ = 106929216. Its totient is φ = 29702400.

The previous prime is 61261349. The next prime is 61261367. The reversal of 61261365 is 56316216.

It is not a de Polignac number, because 61261365 - 2⁴ = 61261349 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 (61261367) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 185476 + ... + 185805.

It is an arithmetic number, because the mean of its divisors is an integer number (6683076).

Almost surely, 2^61261365 is an apocalyptic number.

It is an amenable number.

61261365 is a deficient number, since it is larger than the sum of its proper divisors (45667851).

61261365 is a wasteful number, since it uses less digits than its factorization.

61261365 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 371300.

The product of its digits is 6480, while the sum is 30.

The square root of 61261365 is about 7826.9639707871. The cubic root of 61261365 is about 394.2111372325.

The spelling of 61261365 in words is "sixty-one million, two hundred sixty-one thousand, three hundred sixty-five".