61279065 has 32 divisors (see below), whose sum is σ = 109536000. Its totient is φ = 32503680.

The previous prime is 61279063. The next prime is 61279073. The reversal of 61279065 is 56097216.

It is not a de Polignac number, because 61279065 - 2¹ = 61279063 is a prime.

It is a Curzon number.

It is not an unprimeable number, because it can be changed into a prime (61279063) 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, 25725 + ... + 28005.

It is an arithmetic number, because the mean of its divisors is an integer number (3423000).

Almost surely, 2^61279065 is an apocalyptic number.

It is an amenable number.

61279065 is a deficient number, since it is larger than the sum of its proper divisors (48256935).

61279065 is a wasteful number, since it uses less digits than its factorization.

61279065 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2494 (or 2488 counting only the distinct ones).

The product of its (nonzero) digits is 22680, while the sum is 36.

The square root of 61279065 is about 7828.0945957493. The cubic root of 61279065 is about 394.2490995232.

The spelling of 61279065 in words is "sixty-one million, two hundred seventy-nine thousand, sixty-five".