71385656 has 8 divisors (see below), whose sum is σ = 133848120. Its totient is φ = 35692824.

The previous prime is 71385637. The next prime is 71385659. The reversal of 71385656 is 65658317.

It is a tau number, because it is divible by the number of its divisors (8).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (71385659) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 4461596 + ... + 4461611.

It is an arithmetic number, because the mean of its divisors is an integer number (16731015).

Almost surely, 2^71385656 is an apocalyptic number.

It is an amenable number.

71385656 is a deficient number, since it is larger than the sum of its proper divisors (62462464).

71385656 is a wasteful number, since it uses less digits than its factorization.

71385656 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 8923213 (or 8923209 counting only the distinct ones).

The product of its digits is 151200, while the sum is 41.

The square root of 71385656 is about 8449.0032548224. The cubic root of 71385656 is about 414.8301545261.

The spelling of 71385656 in words is "seventy-one million, three hundred eighty-five thousand, six hundred fifty-six".