347607661 has 4 divisors (see below), whose sum is σ = 349689312. Its totient is φ = 345526012.

The previous prime is 347607647. The next prime is 347607683. The reversal of 347607661 is 166706743.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is not a de Polignac number, because 347607661 - 2¹⁵ = 347574893 is a prime.

It is a Smith number, since the sum of its digits (40) coincides with the sum of the digits of its prime factors. Since it is squarefree, it is also a hoax number.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (347607691) 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 3 ways as a sum of consecutive naturals, for example, 1040575 + ... + 1040908.

It is an arithmetic number, because the mean of its divisors is an integer number (87422328).

Almost surely, 2^347607661 is an apocalyptic number.

It is an amenable number.

347607661 is a deficient number, since it is larger than the sum of its proper divisors (2081651).

347607661 is a wasteful number, since it uses less digits than its factorization.

347607661 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2081650.

The product of its (nonzero) digits is 127008, while the sum is 40.

The square root of 347607661 is about 18644.2393516067. The cubic root of 347607661 is about 703.1205315693.

The spelling of 347607661 in words is "three hundred forty-seven million, six hundred seven thousand, six hundred sixty-one".