71500668 has 12 divisors (see below), whose sum is σ = 166834920. Its totient is φ = 23833552.

The previous prime is 71500661. The next prime is 71500669. The reversal of 71500668 is 86600517.

It is a tau number, because it is divible by the number of its divisors (12).

It is a super-2 number, since 2×71500668² = 10224691048892448, which contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (71500661) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 2979183 + ... + 2979206.

It is an arithmetic number, because the mean of its divisors is an integer number (13902910).

Almost surely, 2^71500668 is an apocalyptic number.

It is an amenable number.

71500668 is an abundant number, since it is smaller than the sum of its proper divisors (95334252).

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

71500668 is a wasteful number, since it uses less digits than its factorization.

71500668 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 5958396 (or 5958394 counting only the distinct ones).

The product of its (nonzero) digits is 10080, while the sum is 33.

The square root of 71500668 is about 8455.8067622197. The cubic root of 71500668 is about 415.0528175868.

The spelling of 71500668 in words is "seventy-one million, five hundred thousand, six hundred sixty-eight".