71501964 has 24 divisors (see below), whose sum is σ = 167342448. Its totient is φ = 23761920.

The previous prime is 71501939. The next prime is 71502037. The reversal of 71501964 is 46910517.

It is a super-2 number, since 2×71501964² = 10225061711714592, which contains 22 as substring.

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, 4797 + ... + 12884.

It is an arithmetic number, because the mean of its divisors is an integer number (6972602).

Almost surely, 2^71501964 is an apocalyptic number.

It is an amenable number.

71501964 is an abundant number, since it is smaller than the sum of its proper divisors (95840484).

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

71501964 is a wasteful number, since it uses less digits than its factorization.

71501964 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 18025 (or 18023 counting only the distinct ones).

The product of its (nonzero) digits is 7560, while the sum is 33.

The square root of 71501964 is about 8455.8833956010. The cubic root of 71501964 is about 415.0553252800.

The spelling of 71501964 in words is "seventy-one million, five hundred one thousand, nine hundred sixty-four".