345564387 has 20 divisors (see below), whose sum is σ = 589959216. Its totient is φ = 197465040.

The previous prime is 345564361. The next prime is 345564391. The reversal of 345564387 is 783465543.

345564387 is a `hidden beast` number, since 3 + 4 + 5 + 564 + 3 + 87 = 666.

It is not a de Polignac number, because 345564387 - 2¹⁵ = 345531619 is a prime.

It is a Smith number, since the sum of its digits (45) coincides with the sum of the digits of its prime factors.

It is not an unprimeable number, because it can be changed into a prime (345564337) by changing a digit.

It is a polite number, since it can be written in 19 ways as a sum of consecutive naturals, for example, 304164 + ... + 305297.

Almost surely, 2^345564387 is an apocalyptic number.

345564387 is a deficient number, since it is larger than the sum of its proper divisors (244394829).

345564387 is an equidigital number, since it uses as much as digits as its factorization.

345564387 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 609480 (or 609471 counting only the distinct ones).

The product of its digits is 1209600, while the sum is 45.

The square root of 345564387 is about 18589.3621999250. The cubic root of 345564387 is about 701.7401514718.

The spelling of 345564387 in words is "three hundred forty-five million, five hundred sixty-four thousand, three hundred eighty-seven".