380697666 has 16 divisors (see below), whose sum is σ = 761586624. Its totient is φ = 126867344.

The previous prime is 380697649. The next prime is 380697673. The reversal of 380697666 is 666796083.

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, 42100 + ... + 50336.

It is an arithmetic number, because the mean of its divisors is an integer number (47599164).

Almost surely, 2^380697666 is an apocalyptic number.

380697666 is an abundant number, since it is smaller than the sum of its proper divisors (380888958).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

380697666 is a wasteful number, since it uses less digits than its factorization.

380697666 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 15945.

The product of its (nonzero) digits is 1959552, while the sum is 51.

The square root of 380697666 is about 19511.4752389459. The cubic root of 380697666 is about 724.7586456226.

The spelling of 380697666 in words is "three hundred eighty million, six hundred ninety-seven thousand, six hundred sixty-six".