351579661 has 8 divisors (see below), whose sum is σ = 367003544. Its totient is φ = 336467520.

The previous prime is 351579659. The next prime is 351579689. The reversal of 351579661 is 166975153.

It is a happy number.

It can be written as a sum of positive squares in 4 ways, for example, as 12320100 + 339259561 = 3510^2 + 18419^2 .

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

It is a cyclic number.

It is not a de Polignac number, because 351579661 - 2¹ = 351579659 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 (351579611) 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, 75630 + ... + 80143.

It is an arithmetic number, because the mean of its divisors is an integer number (45875443).

Almost surely, 2^351579661 is an apocalyptic number.

It is an amenable number.

351579661 is a deficient number, since it is larger than the sum of its proper divisors (15423883).

351579661 is a wasteful number, since it uses less digits than its factorization.

351579661 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 155871.

The product of its digits is 170100, while the sum is 43.

The square root of 351579661 is about 18750.4576210822. The cubic root of 351579661 is about 705.7885052921.

The spelling of 351579661 in words is "three hundred fifty-one million, five hundred seventy-nine thousand, six hundred sixty-one".