397860654 has 8 divisors (see below), whose sum is σ = 795721320. Its totient is φ = 132620216.

The previous prime is 397860653. The next prime is 397860691. The reversal of 397860654 is 456068793.

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

397860654 is an admirable number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (397860653) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 33155049 + ... + 33155060.

It is an arithmetic number, because the mean of its divisors is an integer number (99465165).

Almost surely, 2^397860654 is an apocalyptic number.

397860654 is a primitive abundant number, since it is smaller than the sum of its proper divisors, none of which is abundant.

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

397860654 is a wasteful number, since it uses less digits than its factorization.

397860654 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 66310114.

The product of its (nonzero) digits is 1088640, while the sum is 48.

The square root of 397860654 is about 19946.4446456004. Note that the first 3 decimals coincide. The cubic root of 397860654 is about 735.4903812531.

The spelling of 397860654 in words is "three hundred ninety-seven million, eight hundred sixty thousand, six hundred fifty-four".