61590715 has 4 divisors (see below), whose sum is σ = 73908864. Its totient is φ = 49272568.

The previous prime is 61590701. The next prime is 61590719. The reversal of 61590715 is 51709516.

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 61590715 - 2⁷ = 61590587 is a prime.

It is a super-2 number, since 2×61590715² = 7586832348422450, which contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (61590719) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 6159067 + ... + 6159076.

It is an arithmetic number, because the mean of its divisors is an integer number (18477216).

Almost surely, 2^61590715 is an apocalyptic number.

61590715 is a deficient number, since it is larger than the sum of its proper divisors (12318149).

61590715 is a wasteful number, since it uses less digits than its factorization.

61590715 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 12318148.

The product of its (nonzero) digits is 9450, while the sum is 34.

The square root of 61590715 is about 7847.9752165766. The cubic root of 61590715 is about 394.9163204677.

The spelling of 61590715 in words is "sixty-one million, five hundred ninety thousand, seven hundred fifteen".