662679289 has 8 divisors (see below), whose sum is σ = 692099712. Its totient is φ = 633309600.

The previous prime is 662679253. The next prime is 662679313. The reversal of 662679289 is 982976266.

It is a happy number.

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

It is not a de Polignac number, because 662679289 - 2⁷ = 662679161 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (662679229) 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, 15364 + ... + 39514.

It is an arithmetic number, because the mean of its divisors is an integer number (86512464).

Almost surely, 2^662679289 is an apocalyptic number.

It is an amenable number.

662679289 is a deficient number, since it is larger than the sum of its proper divisors (29420423).

662679289 is a wasteful number, since it uses less digits than its factorization.

662679289 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 25367.

The product of its digits is 3919104, while the sum is 55.

The square root of 662679289 is about 25742.5579342846. The cubic root of 662679289 is about 871.8353332313.

The spelling of 662679289 in words is "six hundred sixty-two million, six hundred seventy-nine thousand, two hundred eighty-nine".