385604663 has 4 divisors (see below), whose sum is σ = 385705320. Its totient is φ = 385504008.

The previous prime is 385604647. The next prime is 385604669. The reversal of 385604663 is 366406583.

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

It is a cyclic number.

It is not a de Polignac number, because 385604663 - 2⁴ = 385604647 is a prime.

It is a super-2 number, since 2×385604663² = 297381912254687138, which contains 22 as substring.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 385604663.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (385604669) 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, 44345 + ... + 52322.

It is an arithmetic number, because the mean of its divisors is an integer number (96426330).

Almost surely, 2^385604663 is an apocalyptic number.

385604663 is a deficient number, since it is larger than the sum of its proper divisors (100657).

385604663 is an equidigital number, since it uses as much as digits as its factorization.

385604663 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 100656.

The product of its (nonzero) digits is 311040, while the sum is 41.

The square root of 385604663 is about 19636.8190652152. The cubic root of 385604663 is about 727.8592836496.

The spelling of 385604663 in words is "three hundred eighty-five million, six hundred four thousand, six hundred sixty-three".