609945607 has 4 divisors (see below), whose sum is σ = 610641976. Its totient is φ = 609249240.

The previous prime is 609945577. The next prime is 609945613. The reversal of 609945607 is 706549906.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is not a de Polignac number, because 609945607 - 2¹¹ = 609943559 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 (609945647) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 346869 + ... + 348622.

It is an arithmetic number, because the mean of its divisors is an integer number (152660494).

Almost surely, 2^609945607 is an apocalyptic number.

609945607 is a deficient number, since it is larger than the sum of its proper divisors (696369).

609945607 is an equidigital number, since it uses as much as digits as its factorization.

609945607 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 696368.

The product of its (nonzero) digits is 408240, while the sum is 46.

The square root of 609945607 is about 24697.0768918105. The cubic root of 609945607 is about 848.0674002846.

The spelling of 609945607 in words is "six hundred nine million, nine hundred forty-five thousand, six hundred seven".