850640164 has 18 divisors (see below), whose sum is σ = 1636252982. Its totient is φ = 386654400.

The previous prime is 850640159. The next prime is 850640171. The reversal of 850640164 is 461046058.

It can be written as a sum of positive squares in only one way, i.e., 652393764 + 198246400 = 25542^2 + 14080^2 .

It is an unprimeable number.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 878277 + ... + 879244.

Almost surely, 2^850640164 is an apocalyptic number.

It is an amenable number.

850640164 is a deficient number, since it is larger than the sum of its proper divisors (785612818).

850640164 is a wasteful number, since it uses less digits than its factorization.

850640164 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1757547 (or 1757534 counting only the distinct ones).

The product of its (nonzero) digits is 23040, while the sum is 34.

The square root of 850640164 is about 29165.7361299179. The cubic root of 850640164 is about 947.5059841868.

The spelling of 850640164 in words is "eight hundred fifty million, six hundred forty thousand, one hundred sixty-four".