345578672 has 20 divisors (see below), whose sum is σ = 671555976. Its totient is φ = 172273920.

The previous prime is 345578663. The next prime is 345578677. The reversal of 345578672 is 276875543.

It is not an unprimeable number, because it can be changed into a prime (345578677) 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, 26654 + ... + 37437.

Almost surely, 2^345578672 is an apocalyptic number.

It is an amenable number.

345578672 is a deficient number, since it is larger than the sum of its proper divisors (325977304).

345578672 is a wasteful number, since it uses less digits than its factorization.

345578672 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 64436 (or 64430 counting only the distinct ones).

The product of its digits is 1411200, while the sum is 47.

The square root of 345578672 is about 18589.7464210785. The cubic root of 345578672 is about 701.7498208902.

The spelling of 345578672 in words is "three hundred forty-five million, five hundred seventy-eight thousand, six hundred seventy-two".