387672687 has 12 divisors (see below), whose sum is σ = 570537864. Its totient is φ = 253571760.

The previous prime is 387672683. The next prime is 387672689. The reversal of 387672687 is 786276783.

It is not a de Polignac number, because 387672687 - 2² = 387672683 is a prime.

It is a super-2 number, since 2×387672687² = 300580224491599938, which contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (387672683) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 405889 + ... + 406842.

It is an arithmetic number, because the mean of its divisors is an integer number (47544822).

Almost surely, 2^387672687 is an apocalyptic number.

387672687 is a deficient number, since it is larger than the sum of its proper divisors (182865177).

387672687 is a wasteful number, since it uses less digits than its factorization.

387672687 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 812790 (or 812787 counting only the distinct ones).

The product of its digits is 4741632, while the sum is 54.

The square root of 387672687 is about 19689.4054506478. The cubic root of 387672687 is about 729.1581506982.

The spelling of 387672687 in words is "three hundred eighty-seven million, six hundred seventy-two thousand, six hundred eighty-seven".