71964870 has 32 divisors (see below), whose sum is σ = 172942560. Its totient is φ = 19165440.

The previous prime is 71964869. The next prime is 71964911. The reversal of 71964870 is 7846917.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 37740 + ... + 39600.

It is an arithmetic number, because the mean of its divisors is an integer number (5404455).

Almost surely, 2^71964870 is an apocalyptic number.

71964870 is an abundant number, since it is smaller than the sum of its proper divisors (100977690).

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

71964870 is a wasteful number, since it uses less digits than its factorization.

71964870 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3160.

The product of its (nonzero) digits is 84672, while the sum is 42.

The square root of 71964870 is about 8483.2110665714. The cubic root of 71964870 is about 415.9490930988.

The spelling of 71964870 in words is "seventy-one million, nine hundred sixty-four thousand, eight hundred seventy".