71078164 has 24 divisors (see below), whose sum is σ = 135161600. Its totient is φ = 32581440.

The previous prime is 71078153. The next prime is 71078177. The reversal of 71078164 is 46187017.

It is a super-2 number, since 2×71078164² = 10104210795221792, which contains 22 as substring.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 12729 + ... + 17440.

Almost surely, 2^71078164 is an apocalyptic number.

It is an amenable number.

71078164 is a deficient number, since it is larger than the sum of its proper divisors (64083436).

71078164 is a wasteful number, since it uses less digits than its factorization.

71078164 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 30223 (or 30221 counting only the distinct ones).

The product of its (nonzero) digits is 9408, while the sum is 34.

The square root of 71078164 is about 8430.7866774104. The cubic root of 71078164 is about 414.2336736172.

The spelling of 71078164 in words is "seventy-one million, seventy-eight thousand, one hundred sixty-four".