609984281 has 8 divisors (see below), whose sum is σ = 623198784. Its totient is φ = 596890800.

The previous prime is 609984269. The next prime is 609984313. The reversal of 609984281 is 182489906.

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

It is a cyclic number.

It is not a de Polignac number, because 609984281 - 2¹⁸ = 609722137 is a prime.

It is a super-2 number, since 2×609984281² = 744161646134173922, which contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (609984211) 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, 20030 + ... + 40263.

It is an arithmetic number, because the mean of its divisors is an integer number (77899848).

Almost surely, 2^609984281 is an apocalyptic number.

It is an amenable number.

609984281 is a deficient number, since it is larger than the sum of its proper divisors (13214503).

609984281 is a wasteful number, since it uses less digits than its factorization.

609984281 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 60511.

The product of its (nonzero) digits is 248832, while the sum is 47.

The square root of 609984281 is about 24697.8598465535. The cubic root of 609984281 is about 848.0853239951.

The spelling of 609984281 in words is "six hundred nine million, nine hundred eighty-four thousand, two hundred eighty-one".