380623665 has 16 divisors (see below), whose sum is σ = 635476608. Its totient is φ = 194173056.

The previous prime is 380623657. The next prime is 380623667. The reversal of 380623665 is 566326083.

It is a happy number.

It is not a de Polignac number, because 380623665 - 2³ = 380623657 is a prime.

It is not an unprimeable number, because it can be changed into a prime (380623667) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 551284 + ... + 551973.

It is an arithmetic number, because the mean of its divisors is an integer number (39717288).

Almost surely, 2^380623665 is an apocalyptic number.

It is an amenable number.

380623665 is a deficient number, since it is larger than the sum of its proper divisors (254852943).

380623665 is a wasteful number, since it uses less digits than its factorization.

380623665 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1103288.

The product of its (nonzero) digits is 155520, while the sum is 39.

The square root of 380623665 is about 19509.5788011940. The cubic root of 380623665 is about 724.7116824242.

The spelling of 380623665 in words is "three hundred eighty million, six hundred twenty-three thousand, six hundred sixty-five".