378358666 has 32 divisors (see below), whose sum is σ = 683919360. Its totient is φ = 153356976.

The previous prime is 378358663. The next prime is 378358699. The reversal of 378358666 is 666853873.

It is not an unprimeable number, because it can be changed into a prime (378358663) 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, 260755 + ... + 262201.

It is an arithmetic number, because the mean of its divisors is an integer number (21372480).

Almost surely, 2^378358666 is an apocalyptic number.

378358666 is a deficient number, since it is larger than the sum of its proper divisors (305560694).

378358666 is a wasteful number, since it uses less digits than its factorization.

378358666 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2458.

The product of its digits is 4354560, while the sum is 52.

The square root of 378358666 is about 19451.4438024533. The cubic root of 378358666 is about 723.2712937558.

The spelling of 378358666 in words is "three hundred seventy-eight million, three hundred fifty-eight thousand, six hundred sixty-six".