609694863 has 8 divisors (see below), whose sum is σ = 813058176. Its totient is φ = 406397400.

The previous prime is 609694859. The next prime is 609694873. The reversal of 609694863 is 368496906.

609694863 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a Cunningham number, because it is equal to 24692²-1.

It is a sphenic number, since it is the product of 3 distinct primes.

It is not a de Polignac number, because 609694863 - 2² = 609694859 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (609694823) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 12348 + ... + 37038.

It is an arithmetic number, because the mean of its divisors is an integer number (101632272).

Almost surely, 2^609694863 is an apocalyptic number.

609694863 is a deficient number, since it is larger than the sum of its proper divisors (203363313).

609694863 is a wasteful number, since it uses less digits than its factorization.

609694863 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 32925.

The product of its (nonzero) digits is 1679616, while the sum is 51.

The square root of 609694863 is about 24691.9999797505. Note that the first 4 decimals coincide. The cubic root of 609694863 is about 847.9511730037.

The spelling of 609694863 in words is "six hundred nine million, six hundred ninety-four thousand, eight hundred sixty-three".