857463864 has 32 divisors (see below), whose sum is σ = 2189272320. Its totient is φ = 279739616.

The previous prime is 857463853. The next prime is 857463881. The reversal of 857463864 is 468364758.

857463864 = T₆₀₁₇ + T₆₀₁₈ + ... + T₆₀₆₃.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 378954 + ... + 381209.

It is an arithmetic number, because the mean of its divisors is an integer number (68414760).

Almost surely, 2^857463864 is an apocalyptic number.

It is an amenable number.

857463864 is an abundant number, since it is smaller than the sum of its proper divisors (1331808456).

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

857463864 is a wasteful number, since it uses less digits than its factorization.

857463864 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 760219 (or 760215 counting only the distinct ones).

The product of its digits is 3870720, while the sum is 51.

The square root of 857463864 is about 29282.4839110346. The cubic root of 857463864 is about 950.0328202881.

The spelling of 857463864 in words is "eight hundred fifty-seven million, four hundred sixty-three thousand, eight hundred sixty-four".