354861665 has 8 divisors (see below), whose sum is σ = 426760488. Its totient is φ = 283271680.

The previous prime is 354861649. The next prime is 354861667. The reversal of 354861665 is 566168453.

It can be written as a sum of positive squares in 4 ways, for example, as 106357969 + 248503696 = 10313^2 + 15764^2 .

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

It is not a de Polignac number, because 354861665 - 2⁴ = 354861649 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (354861667) 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, 74672 + ... + 79281.

It is an arithmetic number, because the mean of its divisors is an integer number (53345061).

Almost surely, 2^354861665 is an apocalyptic number.

It is an amenable number.

354861665 is a deficient number, since it is larger than the sum of its proper divisors (71898823).

354861665 is a wasteful number, since it uses less digits than its factorization.

354861665 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 154419.

The product of its digits is 518400, while the sum is 44.

The square root of 354861665 is about 18837.7722939842. The cubic root of 354861665 is about 707.9778905339.

The spelling of 354861665 in words is "three hundred fifty-four million, eight hundred sixty-one thousand, six hundred sixty-five".