71879364 has 18 divisors (see below), whose sum is σ = 181695150. Its totient is φ = 23959776.

The previous prime is 71879329. The next prime is 71879369. The reversal of 71879364 is 46397817.

It can be written as a sum of positive squares in only one way, i.e., 44756100 + 27123264 = 6690^2 + 5208^2 .

It is a tau number, because it is divible by the number of its divisors (18).

It is not an unprimeable number, because it can be changed into a prime (71879369) by changing a digit.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 998289 + ... + 998360.

It is an arithmetic number, because the mean of its divisors is an integer number (10094175).

Almost surely, 2^71879364 is an apocalyptic number.

It is an amenable number.

71879364 is an abundant number, since it is smaller than the sum of its proper divisors (109815786).

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

71879364 is a wasteful number, since it uses less digits than its factorization.

71879364 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1996659 (or 1996654 counting only the distinct ones).

The product of its digits is 254016, while the sum is 45.

The square root of 71879364 is about 8478.1698496786. The cubic root of 71879364 is about 415.7842893615.

The spelling of 71879364 in words is "seventy-one million, eight hundred seventy-nine thousand, three hundred sixty-four".