71264137 has 4 divisors (see below), whose sum is σ = 81444736. Its totient is φ = 61083540.

The previous prime is 71264111. The next prime is 71264161. The reversal of 71264137 is 73146217.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is not a de Polignac number, because 71264137 - 2²³ = 62875529 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 71264099 and 71264108.

It is not an unprimeable number, because it can be changed into a prime (71265137) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 5090289 + ... + 5090302.

It is an arithmetic number, because the mean of its divisors is an integer number (20361184).

Almost surely, 2^71264137 is an apocalyptic number.

It is an amenable number.

71264137 is a deficient number, since it is larger than the sum of its proper divisors (10180599).

71264137 is a wasteful number, since it uses less digits than its factorization.

71264137 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 10180598.

The product of its digits is 7056, while the sum is 31.

The square root of 71264137 is about 8441.8088701415. The cubic root of 71264137 is about 414.5946339307.

The spelling of 71264137 in words is "seventy-one million, two hundred sixty-four thousand, one hundred thirty-seven".