75720715 has 16 divisors (see below), whose sum is σ = 108361728. Its totient is φ = 49664736.

The previous prime is 75720709. The next prime is 75720739. The reversal of 75720715 is 51702757.

It is a cyclic number.

It is not a de Polignac number, because 75720715 - 2⁵ = 75720683 is a prime.

It is a super-2 number, since 2×75720715² = 11467253360222450, which contains 22 as substring.

It is a Duffinian number.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 46227 + ... + 47836.

It is an arithmetic number, because the mean of its divisors is an integer number (6772608).

Almost surely, 2^75720715 is an apocalyptic number.

75720715 is a deficient number, since it is larger than the sum of its proper divisors (32641013).

75720715 is a wasteful number, since it uses less digits than its factorization.

75720715 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 94098.

The product of its (nonzero) digits is 17150, while the sum is 34.

The square root of 75720715 is about 8701.7650508388. The cubic root of 75720715 is about 423.0628610329.

The spelling of 75720715 in words is "seventy-five million, seven hundred twenty thousand, seven hundred fifteen".