387680165 has 8 divisors (see below), whose sum is σ = 465681528. Its totient is φ = 309833920.

The previous prime is 387680159. The next prime is 387680171. The reversal of 387680165 is 561086783.

It is an interprime number because it is at equal distance from previous prime (387680159) and next prime (387680171).

It can be written as a sum of positive squares in 4 ways, for example, as 17156164 + 370524001 = 4142^2 + 19249^2 .

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

It is not a de Polignac number, because 387680165 - 2⁶ = 387680101 is a prime.

It is a Duffinian number.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 33206 + ... + 43335.

It is an arithmetic number, because the mean of its divisors is an integer number (58210191).

Almost surely, 2^387680165 is an apocalyptic number.

It is an amenable number.

387680165 is a deficient number, since it is larger than the sum of its proper divisors (78001363).

387680165 is a wasteful number, since it uses less digits than its factorization.

387680165 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 77559.

The product of its (nonzero) digits is 241920, while the sum is 44.

The square root of 387680165 is about 19689.5953488130. The cubic root of 387680165 is about 729.1628390257.

The spelling of 387680165 in words is "three hundred eighty-seven million, six hundred eighty thousand, one hundred sixty-five".