396666692 has 6 divisors (see below), whose sum is σ = 694166718. Its totient is φ = 198333344.

The previous prime is 396666691. The next prime is 396666703. The reversal of 396666692 is 296666693.

It can be written as a sum of positive squares in only one way, i.e., 223323136 + 173343556 = 14944^2 + 13166^2 .

It is not an unprimeable number, because it can be changed into a prime (396666691) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 49583333 + ... + 49583340.

It is an arithmetic number, because the mean of its divisors is an integer number (115694453).

Almost surely, 2^396666692 is an apocalyptic number.

It is an amenable number.

396666692 is a deficient number, since it is larger than the sum of its proper divisors (297500026).

396666692 is a wasteful number, since it uses less digits than its factorization.

396666692 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 99166677 (or 99166675 counting only the distinct ones).

The product of its digits is 3779136, while the sum is 53.

The square root of 396666692 is about 19916.4929643750. The cubic root of 396666692 is about 734.7539195025.

Subtracting from 396666692 its reverse (296666693), we obtain a palindrome (99999999).

The spelling of 396666692 in words is "three hundred ninety-six million, six hundred sixty-six thousand, six hundred ninety-two".