351668879 has 4 divisors (see below), whose sum is σ = 351708000. Its totient is φ = 351629760.

The previous prime is 351668857. The next prime is 351668903. The reversal of 351668879 is 978866153.

It is a happy number.

It is a semiprime because it is the product of two primes, and also a brilliant number, because the two primes have the same length, and also an emirpimes, since its reverse is a distinct semiprime: 978866153 = 283 ⋅3458891.

It is a cyclic number.

It is not a de Polignac number, because 351668879 - 2⁸ = 351668623 is a prime.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 351668879.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (351668839) 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, 1439 + ... + 26559.

It is an arithmetic number, because the mean of its divisors is an integer number (87927000).

Almost surely, 2^351668879 is an apocalyptic number.

351668879 is a deficient number, since it is larger than the sum of its proper divisors (39121).

351668879 is a wasteful number, since it uses less digits than its factorization.

351668879 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 39120.

The product of its digits is 2177280, while the sum is 53.

The square root of 351668879 is about 18752.8365587716. The cubic root of 351668879 is about 705.8482013062.

The spelling of 351668879 in words is "three hundred fifty-one million, six hundred sixty-eight thousand, eight hundred seventy-nine".