71997562 has 48 divisors (see below), whose sum is σ = 139732992. Its totient is φ = 27548640.

The previous prime is 71997553. The next prime is 71997647. The reversal of 71997562 is 26579917.

It is a happy number.

It is an unprimeable number.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 38583 + ... + 40405.

It is an arithmetic number, because the mean of its divisors is an integer number (2911104).

Almost surely, 2^71997562 is an apocalyptic number.

71997562 is a deficient number, since it is larger than the sum of its proper divisors (67735430).

71997562 is a wasteful number, since it uses less digits than its factorization.

71997562 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1883 (or 1876 counting only the distinct ones).

The product of its digits is 238140, while the sum is 46.

The square root of 71997562 is about 8485.1377124947. The cubic root of 71997562 is about 416.0120689608.

The spelling of 71997562 in words is "seventy-one million, nine hundred ninety-seven thousand, five hundred sixty-two".