396765 has 16 divisors (see below), whose sum is σ = 705600. Its totient is φ = 211536.

The previous prime is 396733. The next prime is 396833. The reversal of 396765 is 567693.

It is a happy number.

It is not a de Polignac number, because 396765 - 2⁵ = 396733 is a prime.

396765 is a lucky number.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 1335 + ... + 1604.

It is an arithmetic number, because the mean of its divisors is an integer number (44100).

2³⁹⁶⁷⁶⁵ is an apocalyptic number.

It is an amenable number.

396765 is a deficient number, since it is larger than the sum of its proper divisors (308835).

396765 is a wasteful number, since it uses less digits than its factorization.

396765 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2953 (or 2947 counting only the distinct ones).

The product of its digits is 34020, while the sum is 36.

The square root of 396765 is about 629.8928480305. The cubic root of 396765 is about 73.4814613803.

The spelling of 396765 in words is "three hundred ninety-six thousand, seven hundred sixty-five".