387680633 has 4 divisors (see below), whose sum is σ = 392351568. Its totient is φ = 383009700.

The previous prime is 387680593. The next prime is 387680651. The reversal of 387680633 is 336086783.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is not a de Polignac number, because 387680633 - 2⁶ = 387680569 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (387680653) 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, 2335343 + ... + 2335508.

It is an arithmetic number, because the mean of its divisors is an integer number (98087892).

Almost surely, 2^387680633 is an apocalyptic number.

It is an amenable number.

387680633 is a deficient number, since it is larger than the sum of its proper divisors (4670935).

387680633 is an equidigital number, since it uses as much as digits as its factorization.

387680633 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4670934.

The product of its (nonzero) digits is 435456, while the sum is 44.

The square root of 387680633 is about 19689.6072332589. The cubic root of 387680633 is about 729.1631324360.

The spelling of 387680633 in words is "three hundred eighty-seven million, six hundred eighty thousand, six hundred thirty-three".