71967497 has 16 divisors (see below), whose sum is σ = 86816640. Its totient is φ = 58278528.

The previous prime is 71967491. The next prime is 71967503. The reversal of 71967497 is 79476917.

It is a happy number.

It is an interprime number because it is at equal distance from previous prime (71967491) and next prime (71967503).

It is not a de Polignac number, because 71967497 - 2¹⁰ = 71966473 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (71967491) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 81623 + ... + 82499.

It is an arithmetic number, because the mean of its divisors is an integer number (5426040).

Almost surely, 2^71967497 is an apocalyptic number.

It is an amenable number.

71967497 is a deficient number, since it is larger than the sum of its proper divisors (14849143).

71967497 is a wasteful number, since it uses less digits than its factorization.

71967497 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1520.

The product of its digits is 666792, while the sum is 50.

The square root of 71967497 is about 8483.3659003959. The cubic root of 71967497 is about 415.9541542950.

The spelling of 71967497 in words is "seventy-one million, nine hundred sixty-seven thousand, four hundred ninety-seven".