609694398 has 16 divisors (see below), whose sum is σ = 1354876560. Its totient is φ = 203231448.

The previous prime is 609694381. The next prime is 609694403. The reversal of 609694398 is 893496906.

It is a happy number.

It is a Harshad number since it is a multiple of its sum of digits (54), and also a Moran number because the ratio is a prime number: 11290637 = 609694398 / (6 + 0 + 9 + 6 + 9 + 4 + 3 + 9 + 8).

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 5645265 + ... + 5645372.

It is an arithmetic number, because the mean of its divisors is an integer number (84679785).

Almost surely, 2^609694398 is an apocalyptic number.

609694398 is an abundant number, since it is smaller than the sum of its proper divisors (745182162).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

609694398 is a wasteful number, since it uses less digits than its factorization.

609694398 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 11290648 (or 11290642 counting only the distinct ones).

The product of its (nonzero) digits is 2519424, while the sum is 54.

The square root of 609694398 is about 24691.9905637435. The cubic root of 609694398 is about 847.9509574328.

The spelling of 609694398 in words is "six hundred nine million, six hundred ninety-four thousand, three hundred ninety-eight".