386634661 has 8 divisors (see below), whose sum is σ = 443465600. Its totient is φ = 330203088.

The previous prime is 386634659. The next prime is 386634671. The reversal of 386634661 is 166436683.

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

It is a cyclic number.

It is not a de Polignac number, because 386634661 - 2¹ = 386634659 is a prime.

It is a super-2 number, since 2×386634661² = 298972722173169842, which contains 22 as substring.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (386634631) 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, 97761 + ... + 101638.

It is an arithmetic number, because the mean of its divisors is an integer number (55433200).

Almost surely, 2^386634661 is an apocalyptic number.

It is an amenable number.

386634661 is a deficient number, since it is larger than the sum of its proper divisors (56830939).

386634661 is a wasteful number, since it uses less digits than its factorization.

386634661 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 199683.

The product of its digits is 373248, while the sum is 43.

The square root of 386634661 is about 19663.0277678693. The cubic root of 386634661 is about 728.5067750303.

The spelling of 386634661 in words is "three hundred eighty-six million, six hundred thirty-four thousand, six hundred sixty-one".