609799997907 has 24 divisors (see below), whose sum is σ = 889154682624. Its totient is φ = 402688439664.

The previous prime is 609799997903. The next prime is 609799997953. The reversal of 609799997907 is 709799997906.

It is not a de Polignac number, because 609799997907 - 2² = 609799997903 is a prime.

It is not an unprimeable number, because it can be changed into a prime (609799997903) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 9929698 + ... + 9990920.

It is an arithmetic number, because the mean of its divisors is an integer number (37048111776).

Almost surely, 2^609799997907 is an apocalyptic number.

609799997907 is a deficient number, since it is larger than the sum of its proper divisors (279354684717).

609799997907 is a wasteful number, since it uses less digits than its factorization.

609799997907 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 71679 (or 71676 counting only the distinct ones).

The product of its (nonzero) digits is 1093705578, while the sum is 81.

Subtracting 609799997907 from its reverse (709799997906), we obtain a palindrome (99999999999).

The spelling of 609799997907 in words is "six hundred nine billion, seven hundred ninety-nine million, nine hundred ninety-seven thousand, nine hundred seven".