71372477 has 16 divisors (see below), whose sum is σ = 83851200. Its totient is φ = 60023040.

The previous prime is 71372467. The next prime is 71372527. The reversal of 71372477 is 77427317.

It is a happy number.

It is not a de Polignac number, because 71372477 - 2⁸ = 71372221 is a prime.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 71372477.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (71372467) 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, 7799 + ... + 14267.

It is an arithmetic number, because the mean of its divisors is an integer number (5240700).

Almost surely, 2^71372477 is an apocalyptic number.

It is an amenable number.

71372477 is a deficient number, since it is larger than the sum of its proper divisors (12478723).

71372477 is a wasteful number, since it uses less digits than its factorization.

71372477 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 6556.

The product of its digits is 57624, while the sum is 38.

The square root of 71372477 is about 8448.2233043404. The cubic root of 71372477 is about 414.8046247330.

The spelling of 71372477 in words is "seventy-one million, three hundred seventy-two thousand, four hundred seventy-seven".