397718005 has 8 divisors (see below), whose sum is σ = 478007712. Its totient is φ = 317677008.

The previous prime is 397717993. The next prime is 397718029. The reversal of 397718005 is 500817793.

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

It is a cyclic number.

It is not a de Polignac number, because 397718005 - 2⁷ = 397717877 is a prime.

It is a super-2 number, since 2×397718005² = 316359223002360050, which contains 22 as substring.

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 7 ways as a sum of consecutive naturals, for example, 58639 + ... + 65068.

It is an arithmetic number, because the mean of its divisors is an integer number (59750964).

Almost surely, 2^397718005 is an apocalyptic number.

It is an amenable number.

397718005 is a deficient number, since it is larger than the sum of its proper divisors (80289707).

397718005 is a wasteful number, since it uses less digits than its factorization.

397718005 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 124355.

The product of its (nonzero) digits is 52920, while the sum is 40.

The square root of 397718005 is about 19942.8685248637. The cubic root of 397718005 is about 735.4024698133.

The spelling of 397718005 in words is "three hundred ninety-seven million, seven hundred eighteen thousand, five".