345561878 has 8 divisors (see below), whose sum is σ = 518643768. Its totient is φ = 172680624.

The previous prime is 345561877. The next prime is 345561919. The reversal of 345561878 is 878165543.

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

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (345561871) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 45776 + ... + 52787.

It is an arithmetic number, because the mean of its divisors is an integer number (64830471).

Almost surely, 2^345561878 is an apocalyptic number.

345561878 is a deficient number, since it is larger than the sum of its proper divisors (173081890).

345561878 is a wasteful number, since it uses less digits than its factorization.

345561878 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 100318.

The product of its digits is 806400, while the sum is 47.

The square root of 345561878 is about 18589.2947149697. The cubic root of 345561878 is about 701.7384531195.

The spelling of 345561878 in words is "three hundred forty-five million, five hundred sixty-one thousand, eight hundred seventy-eight".