609090643 has 16 divisors (see below), whose sum is σ = 702246400. Its totient is φ = 517492800.

The previous prime is 609090631. The next prime is 609090649. The reversal of 609090643 is 346090906.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-609090643 is a prime.

It is a super-3 number, since 3×609090643³ (a number of 27 digits) contains 333 as substring. Note that it is a super-d number also for d = 2.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (609090649) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 460423 + ... + 461743.

It is an arithmetic number, because the mean of its divisors is an integer number (43890400).

Almost surely, 2^609090643 is an apocalyptic number.

609090643 is a deficient number, since it is larger than the sum of its proper divisors (93155757).

609090643 is a wasteful number, since it uses less digits than its factorization.

609090643 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1858.

The product of its (nonzero) digits is 34992, while the sum is 37.

The square root of 609090643 is about 24679.7618100337. The cubic root of 609090643 is about 847.6709681387.

The spelling of 609090643 in words is "six hundred nine million, ninety thousand, six hundred forty-three".