397705695 has 8 divisors (see below), whose sum is σ = 636329136. Its totient is φ = 212109696.

The previous prime is 397705691. The next prime is 397705703. The reversal of 397705695 is 596507793.

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

It is not a de Polignac number, because 397705695 - 2² = 397705691 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (397705691) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 13256842 + ... + 13256871.

It is an arithmetic number, because the mean of its divisors is an integer number (79541142).

Almost surely, 2^397705695 is an apocalyptic number.

397705695 is a deficient number, since it is larger than the sum of its proper divisors (238623441).

397705695 is a wasteful number, since it uses less digits than its factorization.

397705695 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 26513721.

The product of its (nonzero) digits is 1786050, while the sum is 51.

The square root of 397705695 is about 19942.5598908465. The cubic root of 397705695 is about 735.3948824459.

The spelling of 397705695 in words is "three hundred ninety-seven million, seven hundred five thousand, six hundred ninety-five".