609648128 has 20 divisors (see below), whose sum is σ = 1218106560. Its totient is φ = 304823808.

The previous prime is 609648107. The next prime is 609648161. The reversal of 609648128 is 821846906.

It is a happy number.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 594848 + ... + 595871.

It is an arithmetic number, because the mean of its divisors is an integer number (60905328).

Almost surely, 2^609648128 is an apocalyptic number.

It is an amenable number.

609648128 is a deficient number, since it is larger than the sum of its proper divisors (608458432).

609648128 is an equidigital number, since it uses as much as digits as its factorization.

609648128 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1190737 (or 1190721 counting only the distinct ones).

The product of its (nonzero) digits is 165888, while the sum is 44.

The square root of 609648128 is about 24691.0536024691. The cubic root of 609648128 is about 847.9295064220.

The spelling of 609648128 in words is "six hundred nine million, six hundred forty-eight thousand, one hundred twenty-eight".