872064218 has 4 divisors (see below), whose sum is σ = 1308096330. Its totient is φ = 436032108.

The previous prime is 872064163. The next prime is 872064233. The reversal of 872064218 is 812460278.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in only one way, i.e., 862185769 + 9878449 = 29363^2 + 3143^2 .

It is an unprimeable number.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 218016053 + ... + 218016056.

Almost surely, 2^872064218 is an apocalyptic number.

872064218 is a deficient number, since it is larger than the sum of its proper divisors (436032112).

872064218 is a wasteful number, since it uses less digits than its factorization.

872064218 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 436032111.

The product of its (nonzero) digits is 43008, while the sum is 38.

The square root of 872064218 is about 29530.7334483924. The cubic root of 872064218 is about 955.3946882422.

The spelling of 872064218 in words is "eight hundred seventy-two million, sixty-four thousand, two hundred eighteen".