71506715 has 16 divisors (see below), whose sum is σ = 98844672. Its totient is φ = 48644064.

The previous prime is 71506703. The next prime is 71506733. The reversal of 71506715 is 51760517.

It is a de Polignac number, because none of the positive numbers 2^k-71506715 is a prime.

It is a super-2 number, since 2×71506715² = 10226420580182450, 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, 3599 + ... + 12488.

It is an arithmetic number, because the mean of its divisors is an integer number (6177792).

Almost surely, 2^71506715 is an apocalyptic number.

71506715 is a deficient number, since it is larger than the sum of its proper divisors (27337957).

71506715 is a wasteful number, since it uses less digits than its factorization.

71506715 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 16226.

The product of its (nonzero) digits is 7350, while the sum is 32.

The square root of 71506715 is about 8456.1643195955. The cubic root of 71506715 is about 415.0645179607.

The spelling of 71506715 in words is "seventy-one million, five hundred six thousand, seven hundred fifteen".