71564156 has 24 divisors (see below), whose sum is σ = 127109136. Its totient is φ = 35251200.

The previous prime is 71564131. The next prime is 71564159. The reversal of 71564156 is 65146517.

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 a congruent number.

It is not an unprimeable number, because it can be changed into a prime (71564159) 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, 123740 + ... + 124316.

It is an arithmetic number, because the mean of its divisors is an integer number (5296214).

Almost surely, 2^71564156 is an apocalyptic number.

It is an amenable number.

71564156 is a deficient number, since it is larger than the sum of its proper divisors (55544980).

71564156 is a wasteful number, since it uses less digits than its factorization.

71564156 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 989 (or 987 counting only the distinct ones).

The product of its digits is 25200, while the sum is 35.

The square root of 71564156 is about 8459.5600358411. The cubic root of 71564156 is about 415.1756279911.

The spelling of 71564156 in words is "seventy-one million, five hundred sixty-four thousand, one hundred fifty-six".