61632715 has 4 divisors (see below), whose sum is σ = 73959264. Its totient is φ = 49306168.

The previous prime is 61632707. The next prime is 61632721. The reversal of 61632715 is 51723616.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is not a de Polignac number, because 61632715 - 2³ = 61632707 is a prime.

It is a Smith number, since the sum of its digits (31) coincides with the sum of the digits of its prime factors. Since it is squarefree, it is also a hoax number.

It is a Duffinian number.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 6163267 + ... + 6163276.

It is an arithmetic number, because the mean of its divisors is an integer number (18489816).

Almost surely, 2^61632715 is an apocalyptic number.

61632715 is a deficient number, since it is larger than the sum of its proper divisors (12326549).

61632715 is a wasteful number, since it uses less digits than its factorization.

61632715 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 12326548.

The product of its digits is 7560, while the sum is 31.

The square root of 61632715 is about 7850.6506099813. The cubic root of 61632715 is about 395.0060673105.

Subtracting from 61632715 its reverse (51723616), we obtain a palindrome (9909099).

The spelling of 61632715 in words is "sixty-one million, six hundred thirty-two thousand, seven hundred fifteen".