396645693 has 8 divisors (see below), whose sum is σ = 538839648. Its totient is φ = 259441104.

The previous prime is 396645671. The next prime is 396645749. The reversal of 396645693 is 396546693.

It is a happy number.

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

It is not a de Polignac number, because 396645693 - 2⁸ = 396645437 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (396645593) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 1247155 + ... + 1247472.

It is an arithmetic number, because the mean of its divisors is an integer number (67354956).

Almost surely, 2^396645693 is an apocalyptic number.

It is an amenable number.

396645693 is a deficient number, since it is larger than the sum of its proper divisors (142193955).

396645693 is a wasteful number, since it uses less digits than its factorization.

396645693 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2494683.

The product of its digits is 3149280, while the sum is 51.

The square root of 396645693 is about 19915.9657812520. The cubic root of 396645693 is about 734.7409536464.

The spelling of 396645693 in words is "three hundred ninety-six million, six hundred forty-five thousand, six hundred ninety-three".