609256945 has 16 divisors (see below), whose sum is σ = 839551680. Its totient is φ = 419774400.

The previous prime is 609256943. The next prime is 609256987. The reversal of 609256945 is 549652906.

It is not a de Polignac number, because 609256945 - 2¹ = 609256943 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 609256895 and 609256904.

It is not an unprimeable number, because it can be changed into a prime (609256943) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 290466 + ... + 292555.

It is an arithmetic number, because the mean of its divisors is an integer number (52471980).

Almost surely, 2^609256945 is an apocalyptic number.

It is an amenable number.

609256945 is a deficient number, since it is larger than the sum of its proper divisors (230294735).

609256945 is a wasteful number, since it uses less digits than its factorization.

609256945 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 583056.

The product of its (nonzero) digits is 583200, while the sum is 46.

The square root of 609256945 is about 24683.1307779220. The cubic root of 609256945 is about 847.7481085726.

The spelling of 609256945 in words is "six hundred nine million, two hundred fifty-six thousand, nine hundred forty-five".