854691864 has 64 divisors (see below), whose sum is σ = 2436467040. Its totient is φ = 247511040.

The previous prime is 854691853. The next prime is 854691869. The reversal of 854691864 is 468196458.

It is a Harshad number since it is a multiple of its sum of digits (51).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (854691869) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 75267 + ... + 85874.

Almost surely, 2^854691864 is an apocalyptic number.

It is an amenable number.

854691864 is an abundant number, since it is smaller than the sum of its proper divisors (1581775176).

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

854691864 is a wasteful number, since it uses less digits than its factorization.

854691864 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 161180 (or 161176 counting only the distinct ones).

The product of its digits is 1658880, while the sum is 51.

The square root of 854691864 is about 29235.1135451874. The cubic root of 854691864 is about 949.0079631341.

The spelling of 854691864 in words is "eight hundred fifty-four million, six hundred ninety-one thousand, eight hundred sixty-four".