71504568 has 48 divisors (see below), whose sum is σ = 194238720. Its totient is φ = 23763456.

The previous prime is 71504561. The next prime is 71504591. The reversal of 71504568 is 86540517.

It is a super-2 number, since 2×71504568² = 10225806489733248, which contains 22 as substring.

It is a Harshad number since it is a multiple of its sum of digits (36).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (71504561) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 26280 + ... + 28872.

It is an arithmetic number, because the mean of its divisors is an integer number (4046640).

Almost surely, 2^71504568 is an apocalyptic number.

It is an amenable number.

71504568 is an abundant number, since it is smaller than the sum of its proper divisors (122734152).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

71504568 is a wasteful number, since it uses less digits than its factorization.

71504568 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2988 (or 2981 counting only the distinct ones).

The product of its (nonzero) digits is 33600, while the sum is 36.

The square root of 71504568 is about 8456.0373698323. The cubic root of 71504568 is about 415.0603637940.

The spelling of 71504568 in words is "seventy-one million, five hundred four thousand, five hundred sixty-eight".