71713977 has 16 divisors (see below), whose sum is σ = 100451328. Its totient is φ = 45421200.

The previous prime is 71713951. The next prime is 71713991. The reversal of 71713977 is 77931717.

It is not a de Polignac number, because 71713977 - 2⁶ = 71713913 is a prime.

It is not an unprimeable number, because it can be changed into a prime (71713997) 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, 6978 + ... + 13860.

It is an arithmetic number, because the mean of its divisors is an integer number (6278208).

Almost surely, 2^71713977 is an apocalyptic number.

It is an amenable number.

71713977 is a deficient number, since it is larger than the sum of its proper divisors (28737351).

71713977 is a wasteful number, since it uses less digits than its factorization.

71713977 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 7060.

The product of its digits is 64827, while the sum is 42.

The square root of 71713977 is about 8468.4105356318. The cubic root of 71713977 is about 415.4651522194.

The spelling of 71713977 in words is "seventy-one million, seven hundred thirteen thousand, nine hundred seventy-seven".