662439894 has 8 divisors (see below), whose sum is σ = 1324879800. Its totient is φ = 220813296.

The previous prime is 662439881. The next prime is 662439907. The reversal of 662439894 is 498934266.

It is an interprime number because it is at equal distance from previous prime (662439881) and next prime (662439907).

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

662439894 is an admirable number.

It is a super-2 number, since 2×662439894² = 877653226325462472, which contains 22 as substring.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 55203319 + ... + 55203330.

It is an arithmetic number, because the mean of its divisors is an integer number (165609975).

Almost surely, 2^662439894 is an apocalyptic number.

662439894 is a primitive abundant number, since it is smaller than the sum of its proper divisors, none of which is abundant.

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

662439894 is a wasteful number, since it uses less digits than its factorization.

662439894 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 110406654.

The product of its digits is 2239488, while the sum is 51.

The square root of 662439894 is about 25737.9077238225. The cubic root of 662439894 is about 871.7303361581.

The spelling of 662439894 in words is "six hundred sixty-two million, four hundred thirty-nine thousand, eight hundred ninety-four".