347977345 has 8 divisors (see below), whose sum is σ = 419366376. Its totient is φ = 277186176.

The previous prime is 347977337. The next prime is 347977391. The reversal of 347977345 is 543779743.

It can be written as a sum of positive squares in 4 ways, for example, as 63616576 + 284360769 = 7976^2 + 16863^2 .

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 347977345 - 2³ = 347977337 is a prime.

It is a super-3 number, since 3×347977345³ (a number of 27 digits) contains 333 as substring.

It is a Duffinian number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 148182 + ... + 150511.

It is an arithmetic number, because the mean of its divisors is an integer number (52420797).

Almost surely, 2^347977345 is an apocalyptic number.

It is an amenable number.

347977345 is a deficient number, since it is larger than the sum of its proper divisors (71389031).

347977345 is a wasteful number, since it uses less digits than its factorization.

347977345 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 298931.

The product of its digits is 2222640, while the sum is 49.

The square root of 347977345 is about 18654.1508785578. The cubic root of 347977345 is about 703.3697016800.

The spelling of 347977345 in words is "three hundred forty-seven million, nine hundred seventy-seven thousand, three hundred forty-five".