71149564 has 6 divisors (see below), whose sum is σ = 124511744. Its totient is φ = 35574780.

The previous prime is 71149553. The next prime is 71149567. The reversal of 71149564 is 46594117.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (71149567) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 8893692 + ... + 8893699.

Almost surely, 2^71149564 is an apocalyptic number.

It is an amenable number.

71149564 is a deficient number, since it is larger than the sum of its proper divisors (53362180).

71149564 is a wasteful number, since it uses less digits than its factorization.

71149564 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 17787395 (or 17787393 counting only the distinct ones).

The product of its digits is 30240, while the sum is 37.

The square root of 71149564 is about 8435.0200948190. The cubic root of 71149564 is about 414.3723302958.

The spelling of 71149564 in words is "seventy-one million, one hundred forty-nine thousand, five hundred sixty-four".