351666913 has 8 divisors (see below), whose sum is σ = 400996008. Its totient is φ = 305520384.

The previous prime is 351666911. The next prime is 351666919. The reversal of 351666913 is 319666153.

It can be written as a sum of positive squares in 4 ways, for example, as 77035729 + 274631184 = 8777^2 + 16572^2 .

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

It is not a de Polignac number, because 351666913 - 2¹ = 351666911 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (351666911) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 795406 + ... + 795847.

It is an arithmetic number, because the mean of its divisors is an integer number (50124501).

Almost surely, 2^351666913 is an apocalyptic number.

It is an amenable number.

351666913 is a deficient number, since it is larger than the sum of its proper divisors (49329095).

351666913 is a wasteful number, since it uses less digits than its factorization.

351666913 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1591283.

The product of its digits is 87480, while the sum is 40.

The square root of 351666913 is about 18752.7841399617. The cubic root of 351666913 is about 705.8468859589.

The spelling of 351666913 in words is "three hundred fifty-one million, six hundred sixty-six thousand, nine hundred thirteen".