71536493 has 8 divisors (see below), whose sum is σ = 86565312. Its totient is φ = 57710016.

The previous prime is 71536481. The next prime is 71536511. The reversal of 71536493 is 39463517.

It is a happy number.

It is a sphenic number, since it is the product of 3 distinct primes.

It is not a de Polignac number, because 71536493 - 2⁸ = 71536237 is a prime.

It is a Duffinian number.

It is a Curzon number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (71536093) 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, 300455 + ... + 300692.

It is an arithmetic number, because the mean of its divisors is an integer number (10820664).

Almost surely, 2^71536493 is an apocalyptic number.

It is an amenable number.

71536493 is a deficient number, since it is larger than the sum of its proper divisors (15028819).

71536493 is a wasteful number, since it uses less digits than its factorization.

71536493 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 601171.

The product of its digits is 68040, while the sum is 38.

The square root of 71536493 is about 8457.9248637003. The cubic root of 71536493 is about 415.1221259579.

The spelling of 71536493 in words is "seventy-one million, five hundred thirty-six thousand, four hundred ninety-three".