71997484 has 24 divisors (see below), whose sum is σ = 135970688. Its totient is φ = 33160320.

The previous prime is 71997481. The next prime is 71997503. The reversal of 71997484 is 48479917.

It is not an unprimeable number, because it can be changed into a prime (71997481) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 30424 + ... + 32704.

Almost surely, 2^71997484 is an apocalyptic number.

It is an amenable number.

71997484 is a deficient number, since it is larger than the sum of its proper divisors (63973204).

71997484 is a wasteful number, since it uses less digits than its factorization.

71997484 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2905 (or 2903 counting only the distinct ones).

The product of its digits is 508032, while the sum is 49.

The square root of 71997484 is about 8485.1331162216. The cubic root of 71997484 is about 416.0119187290.

The spelling of 71997484 in words is "seventy-one million, nine hundred ninety-seven thousand, four hundred eighty-four".