854642631 has 8 divisors (see below), whose sum is σ = 1141865344. Its totient is φ = 568590840.

The previous prime is 854642599. The next prime is 854642647. The reversal of 854642631 is 136246458.

It is a sphenic number, since it is the product of 3 distinct primes.

It is not a de Polignac number, because 854642631 - 2⁵ = 854642599 is a prime.

It is a super-2 number, since 2×854642631² = 1460828053445204322, which contains 22 as substring.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 854642631.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (854642651) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 291025 + ... + 293946.

It is an arithmetic number, because the mean of its divisors is an integer number (142733168).

Almost surely, 2^854642631 is an apocalyptic number.

854642631 is a deficient number, since it is larger than the sum of its proper divisors (287222713).

854642631 is a wasteful number, since it uses less digits than its factorization.

854642631 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 585461.

The product of its digits is 138240, while the sum is 39.

The square root of 854642631 is about 29234.2715147821. The cubic root of 854642631 is about 948.9897408139.

The spelling of 854642631 in words is "eight hundred fifty-four million, six hundred forty-two thousand, six hundred thirty-one".