386631 has 36 divisors (see below), whose sum is σ = 713232. Its totient is φ = 196992.

The previous prime is 386629. The next prime is 386641. The reversal of 386631 is 136683.

It is not a de Polignac number, because 386631 - 2¹ = 386629 is a prime.

It is a super-2 number, since 2×386631² = 298967060322, which contains 22 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 386595 and 386604.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (386611) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 35 ways as a sum of consecutive naturals, for example, 20340 + ... + 20358.

It is an arithmetic number, because the mean of its divisors is an integer number (19812).

2³⁸⁶⁶³¹ is an apocalyptic number.

386631 is a deficient number, since it is larger than the sum of its proper divisors (326601).

386631 is a wasteful number, since it uses less digits than its factorization.

386631 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 68 (or 46 counting only the distinct ones).

The product of its digits is 2592, while the sum is 27.

The square root of 386631 is about 621.7965905342. The cubic root of 386631 is about 72.8504475640.

The spelling of 386631 in words is "three hundred eighty-six thousand, six hundred thirty-one".