395790661 has 8 divisors (see below), whose sum is σ = 453677120. Its totient is φ = 338240448.

The previous prime is 395790649. The next prime is 395790677. The reversal of 395790661 is 166097593.

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

It is a de Polignac number, because none of the positive numbers 2^k-395790661 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (395791661) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 81531 + ... + 86248.

It is an arithmetic number, because the mean of its divisors is an integer number (56709640).

Almost surely, 2^395790661 is an apocalyptic number.

It is an amenable number.

395790661 is a deficient number, since it is larger than the sum of its proper divisors (57886459).

395790661 is a wasteful number, since it uses less digits than its factorization.

395790661 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 168123.

The product of its (nonzero) digits is 306180, while the sum is 46.

The square root of 395790661 is about 19894.4882065360. The cubic root of 395790661 is about 734.2126240451.

The spelling of 395790661 in words is "three hundred ninety-five million, seven hundred ninety thousand, six hundred sixty-one".