396720575 has 6 divisors (see below), whose sum is σ = 491933544. Its totient is φ = 317376440.

The previous prime is 396720563. The next prime is 396720607. The reversal of 396720575 is 575027693.

It is not a de Polignac number, because 396720575 - 2⁴ = 396720559 is a prime.

It is a Duffinian number.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 7934387 + ... + 7934436.

It is an arithmetic number, because the mean of its divisors is an integer number (81988924).

Almost surely, 2^396720575 is an apocalyptic number.

396720575 is a deficient number, since it is larger than the sum of its proper divisors (95212969).

396720575 is a wasteful number, since it uses less digits than its factorization.

396720575 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 15868833 (or 15868828 counting only the distinct ones).

The product of its (nonzero) digits is 396900, while the sum is 44.

The square root of 396720575 is about 19917.8456415346. The cubic root of 396720575 is about 734.7871875281.

It can be divided in two parts, 3967 and 20575, that added together give a palindrome (24542).

The spelling of 396720575 in words is "three hundred ninety-six million, seven hundred twenty thousand, five hundred seventy-five".