387660755 has 4 divisors (see below), whose sum is σ = 465192912. Its totient is φ = 310128600.

The previous prime is 387660751. The next prime is 387660799. The reversal of 387660755 is 557066783.

It is a happy number.

It is a semiprime because it is the product of two primes.

It is not a de Polignac number, because 387660755 - 2² = 387660751 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (387660751) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 38766071 + ... + 38766080.

It is an arithmetic number, because the mean of its divisors is an integer number (116298228).

Almost surely, 2^387660755 is an apocalyptic number.

387660755 is a deficient number, since it is larger than the sum of its proper divisors (77532157).

387660755 is an equidigital number, since it uses as much as digits as its factorization.

387660755 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 77532156.

The product of its (nonzero) digits is 1058400, while the sum is 47.

The square root of 387660755 is about 19689.1024427220. The cubic root of 387660755 is about 729.1506698132.

The spelling of 387660755 in words is "three hundred eighty-seven million, six hundred sixty thousand, seven hundred fifty-five".