396610866 has 12 divisors (see below), whose sum is σ = 859323582. Its totient is φ = 132203616.

The previous prime is 396610861. The next prime is 396610891. The reversal of 396610866 is 668016693.

It can be written as a sum of positive squares in only one way, i.e., 334121841 + 62489025 = 18279^2 + 7905^2 .

It is not an unprimeable number, because it can be changed into a prime (396610861) by changing a digit.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 11016951 + ... + 11016986.

Almost surely, 2^396610866 is an apocalyptic number.

396610866 is an abundant number, since it is smaller than the sum of its proper divisors (462712716).

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

396610866 is a wasteful number, since it uses less digits than its factorization.

396610866 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 22033945 (or 22033942 counting only the distinct ones).

The product of its (nonzero) digits is 279936, while the sum is 45.

The square root of 396610866 is about 19915.0914132976. The cubic root of 396610866 is about 734.7194486671.

The spelling of 396610866 in words is "three hundred ninety-six million, six hundred ten thousand, eight hundred sixty-six".