662344891 has 8 divisors (see below), whose sum is σ = 737891280. Its totient is φ = 590312352.

The previous prime is 662344889. The next prime is 662344909. The reversal of 662344891 is 198443266.

It is a happy number.

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 662344891 - 2¹ = 662344889 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (662344801) 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, 878065 + ... + 878818.

It is an arithmetic number, because the mean of its divisors is an integer number (92236410).

Almost surely, 2^662344891 is an apocalyptic number.

662344891 is a deficient number, since it is larger than the sum of its proper divisors (75546389).

662344891 is a wasteful number, since it uses less digits than its factorization.

662344891 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1756925.

The product of its digits is 248832, while the sum is 43.

The square root of 662344891 is about 25736.0620725083. The cubic root of 662344891 is about 871.6886614557.

The spelling of 662344891 in words is "six hundred sixty-two million, three hundred forty-four thousand, eight hundred ninety-one".