71822564 has 24 divisors (see below), whose sum is σ = 138206208. Its totient is φ = 32387040.

The previous prime is 71822561. The next prime is 71822581. The reversal of 71822564 is 46522817.

It is a Smith number, since the sum of its digits (35) coincides with the sum of the digits of its prime factors.

It is not an unprimeable number, because it can be changed into a prime (71822561) 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, 839 + ... + 12014.

It is an arithmetic number, because the mean of its divisors is an integer number (5758592).

Almost surely, 2^71822564 is an apocalyptic number.

It is an amenable number.

71822564 is a deficient number, since it is larger than the sum of its proper divisors (66383644).

71822564 is a wasteful number, since it uses less digits than its factorization.

71822564 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 12995 (or 12993 counting only the distinct ones).

The product of its digits is 26880, while the sum is 35.

The square root of 71822564 is about 8474.8194081054. The cubic root of 71822564 is about 415.6747411326.

The spelling of 71822564 in words is "seventy-one million, eight hundred twenty-two thousand, five hundred sixty-four".