71950613 has 16 divisors (see below), whose sum is σ = 89195904. Its totient is φ = 56624640.

The previous prime is 71950589. The next prime is 71950631. The reversal of 71950613 is 31605917.

It is a cyclic number.

It is not a de Polignac number, because 71950613 - 2¹⁸ = 71688469 is a prime.

It is a super-2 number, since 2×71950613² = 10353781422151538, which contains 22 as substring.

It is a self number, because there is not a number n which added to its sum of digits gives 71950613.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (71950643) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 2495 + ... + 12252.

It is an arithmetic number, because the mean of its divisors is an integer number (5574744).

Almost surely, 2^71950613 is an apocalyptic number.

It is an amenable number.

71950613 is a deficient number, since it is larger than the sum of its proper divisors (17245291).

71950613 is a wasteful number, since it uses less digits than its factorization.

71950613 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 14812.

The product of its (nonzero) digits is 5670, while the sum is 32.

The square root of 71950613 is about 8482.3707181424. The cubic root of 71950613 is about 415.9216233168.

The spelling of 71950613 in words is "seventy-one million, nine hundred fifty thousand, six hundred thirteen".