385697668 has 12 divisors (see below), whose sum is σ = 675472140. Its totient is φ = 192705632.

The previous prime is 385697647. The next prime is 385697681. The reversal of 385697668 is 866796583.

It can be written as a sum of positive squares in 2 ways, for example, as 384238404 + 1459264 = 19602^2 + 1208^2 .

It is a super-2 number, since 2×385697668² = 297525382201276448, which contains 22 as substring.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 29623 + ... + 40606.

It is an arithmetic number, because the mean of its divisors is an integer number (56289345).

Almost surely, 2^385697668 is an apocalyptic number.

It is an amenable number.

385697668 is a deficient number, since it is larger than the sum of its proper divisors (289774472).

385697668 is a wasteful number, since it uses less digits than its factorization.

385697668 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 71606 (or 71604 counting only the distinct ones).

The product of its digits is 13063680, while the sum is 58.

The square root of 385697668 is about 19639.1870503847. The cubic root of 385697668 is about 727.9177970420.

The spelling of 385697668 in words is "three hundred eighty-five million, six hundred ninety-seven thousand, six hundred sixty-eight".