71290564 has 12 divisors (see below), whose sum is σ = 128130604. Its totient is φ = 34681824.

The previous prime is 71290519. The next prime is 71290567. The reversal of 71290564 is 46509217.

It can be written as a sum of positive squares in 2 ways, for example, as 67897600 + 3392964 = 8240^2 + 1842^2 .

It is not an unprimeable number, because it can be changed into a prime (71290567) 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, 240699 + ... + 240994.

Almost surely, 2^71290564 is an apocalyptic number.

71290564 is a gapful number since it is divisible by the number (74) formed by its first and last digit.

It is an amenable number.

71290564 is a deficient number, since it is larger than the sum of its proper divisors (56840040).

71290564 is a wasteful number, since it uses less digits than its factorization.

71290564 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 481734 (or 481732 counting only the distinct ones).

The product of its (nonzero) digits is 15120, while the sum is 34.

The square root of 71290564 is about 8443.3739701615. The cubic root of 71290564 is about 414.6458758728.

The spelling of 71290564 in words is "seventy-one million, two hundred ninety thousand, five hundred sixty-four".