396897705 has 64 divisors (see below), whose sum is σ = 730329600. Its totient is φ = 204353280.

The previous prime is 396897703. The next prime is 396897719. The reversal of 396897705 is 507798693.

It is not a de Polignac number, because 396897705 - 2¹ = 396897703 is a prime.

It is a Curzon number.

It is not an unprimeable number, because it can be changed into a prime (396897701) by changing a digit.

It is a polite number, since it can be written in 63 ways as a sum of consecutive naturals, for example, 903876 + ... + 904314.

It is an arithmetic number, because the mean of its divisors is an integer number (11411400).

Almost surely, 2^396897705 is an apocalyptic number.

It is an amenable number.

396897705 is a deficient number, since it is larger than the sum of its proper divisors (333431895).

396897705 is a wasteful number, since it uses less digits than its factorization.

396897705 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 671 (or 665 counting only the distinct ones).

The product of its (nonzero) digits is 2857680, while the sum is 54.

The square root of 396897705 is about 19922.2916603487. The cubic root of 396897705 is about 734.8965285413.

The spelling of 396897705 in words is "three hundred ninety-six million, eight hundred ninety-seven thousand, seven hundred five".