345052691 has 4 divisors (see below), whose sum is σ = 345220584. Its totient is φ = 344884800.

The previous prime is 345052681. The next prime is 345052699. The reversal of 345052691 is 196250543.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 196250543 = 9221 ⋅21283.

It is a cyclic number.

It is not a de Polignac number, because 345052691 - 2²² = 340858387 is a prime.

It is a super-2 number, since 2×345052691² = 238122719132682962, which contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (345052699) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 80825 + ... + 84986.

It is an arithmetic number, because the mean of its divisors is an integer number (86305146).

Almost surely, 2^345052691 is an apocalyptic number.

345052691 is a deficient number, since it is larger than the sum of its proper divisors (167893).

345052691 is a wasteful number, since it uses less digits than its factorization.

345052691 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 167892.

The product of its (nonzero) digits is 32400, while the sum is 35.

The square root of 345052691 is about 18575.5939608940. The cubic root of 345052691 is about 701.3936120875.

The spelling of 345052691 in words is "three hundred forty-five million, fifty-two thousand, six hundred ninety-one".