345902017 has 4 divisors (see below), whose sum is σ = 349075540. Its totient is φ = 342728496.

The previous prime is 345901987. The next prime is 345902023. The reversal of 345902017 is 710209543.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in 2 ways, for example, as 121022001 + 224880016 = 11001^2 + 14996^2 .

It is a cyclic number.

It is not a de Polignac number, because 345902017 - 2²³ = 337513409 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 345902017.

It is not an unprimeable number, because it can be changed into a prime (345902027) 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, 1586598 + ... + 1586815.

It is an arithmetic number, because the mean of its divisors is an integer number (87268885).

Almost surely, 2^345902017 is an apocalyptic number.

It is an amenable number.

345902017 is a deficient number, since it is larger than the sum of its proper divisors (3173523).

345902017 is a wasteful number, since it uses less digits than its factorization.

345902017 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3173522.

The product of its (nonzero) digits is 7560, while the sum is 31.

The square root of 345902017 is about 18598.4412518899. The cubic root of 345902017 is about 701.9686196583.

The spelling of 345902017 in words is "three hundred forty-five million, nine hundred two thousand, seventeen".