71516013 has 16 divisors (see below), whose sum is σ = 98145600. Its totient is φ = 46293120.

The previous prime is 71515963. The next prime is 71516017. The reversal of 71516013 is 31061517.

It is not a de Polignac number, because 71516013 - 2⁸ = 71515757 is a prime.

It is a super-2 number, since 2×71516013² = 10229080230832338, which contains 22 as substring.

It is a Curzon number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (71516017) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 26898 + ... + 29436.

It is an arithmetic number, because the mean of its divisors is an integer number (6134100).

Almost surely, 2^71516013 is an apocalyptic number.

It is an amenable number.

71516013 is a deficient number, since it is larger than the sum of its proper divisors (26629587).

71516013 is a wasteful number, since it uses less digits than its factorization.

71516013 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2812.

The product of its (nonzero) digits is 630, while the sum is 24.

The square root of 71516013 is about 8456.7140781748. The cubic root of 71516013 is about 415.0825074256.

The spelling of 71516013 in words is "seventy-one million, five hundred sixteen thousand, thirteen".