965390666 has 8 divisors (see below), whose sum is σ = 1448254404. Its totient is φ = 482639200.

The previous prime is 965390663. The next prime is 965390683. The reversal of 965390666 is 666093569.

It can be written as a sum of positive squares in 2 ways, for example, as 928969441 + 36421225 = 30479^2 + 6035^2 .

It is a sphenic number, since it is the product of 3 distinct primes.

It is not an unprimeable number, because it can be changed into a prime (965390663) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 1565 + ... + 43968.

Almost surely, 2^965390666 is an apocalyptic number.

965390666 is a deficient number, since it is larger than the sum of its proper divisors (482863738).

965390666 is a wasteful number, since it uses less digits than its factorization.

965390666 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 56136.

The product of its (nonzero) digits is 1574640, while the sum is 50.

The square root of 965390666 is about 31070.7364895009. The cubic root of 965390666 is about 988.3278462278.

The spelling of 965390666 in words is "nine hundred sixty-five million, three hundred ninety thousand, six hundred sixty-six".