345881815 has 8 divisors (see below), whose sum is σ = 415256688. Its totient is φ = 276573120.

The previous prime is 345881807. The next prime is 345881819. The reversal of 345881815 is 518188543.

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

It is not a de Polignac number, because 345881815 - 2³ = 345881807 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 (345881819) 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, 4206 + ... + 26635.

It is an arithmetic number, because the mean of its divisors is an integer number (51907086).

Almost surely, 2^345881815 is an apocalyptic number.

345881815 is a deficient number, since it is larger than the sum of its proper divisors (69374873).

345881815 is a wasteful number, since it uses less digits than its factorization.

345881815 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 33089.

The product of its digits is 153600, while the sum is 43.

The square root of 345881815 is about 18597.8981339290. The cubic root of 345881815 is about 701.9549535086.

The spelling of 345881815 in words is "three hundred forty-five million, eight hundred eighty-one thousand, eight hundred fifteen".