851235064 has 16 divisors (see below), whose sum is σ = 1610710200. Its totient is φ = 421712352.

The previous prime is 851235041. The next prime is 851235097. The reversal of 851235064 is 460532158.

It is a super-2 number, since 2×851235064² = 1449202268366168192, which contains 22 as substring.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 487222 + ... + 488965.

Almost surely, 2^851235064 is an apocalyptic number.

It is an amenable number.

851235064 is a deficient number, since it is larger than the sum of its proper divisors (759475136).

851235064 is a wasteful number, since it uses less digits than its factorization.

851235064 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 976302 (or 976298 counting only the distinct ones).

The product of its (nonzero) digits is 28800, while the sum is 34.

The square root of 851235064 is about 29175.9329585191. The cubic root of 851235064 is about 947.7268139346.

The spelling of 851235064 in words is "eight hundred fifty-one million, two hundred thirty-five thousand, sixty-four".