609990810 has 64 divisors (see below), whose sum is σ = 1719930240. Its totient is φ = 136500480.

The previous prime is 609990767. The next prime is 609990811. The reversal of 609990810 is 18099906.

609990810 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a super-2 number, since 2×609990810² = 744177576568912200, which contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (609990811) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 66805 + ... + 75384.

It is an arithmetic number, because the mean of its divisors is an integer number (26873910).

Almost surely, 2^609990810 is an apocalyptic number.

609990810 is an abundant number, since it is smaller than the sum of its proper divisors (1109939430).

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

609990810 is a wasteful number, since it uses less digits than its factorization.

609990810 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 142223.

The product of its (nonzero) digits is 34992, while the sum is 42.

The square root of 609990810 is about 24697.9920236444. The cubic root of 609990810 is about 848.0883498268.

The spelling of 609990810 in words is "six hundred nine million, nine hundred ninety thousand, eight hundred ten".