666444462 has 8 divisors (see below), whose sum is σ = 1332888936. Its totient is φ = 222148152.

The previous prime is 666444461. The next prime is 666444469. The reversal of 666444462 is 264444666.

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

666444462 is an admirable number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (666444461) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 55537033 + ... + 55537044.

It is an arithmetic number, because the mean of its divisors is an integer number (166611117).

Almost surely, 2^666444462 is an apocalyptic number.

666444462 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.

666444462 is a wasteful number, since it uses less digits than its factorization.

666444462 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 111074082.

The product of its digits is 663552, while the sum is 42.

The square root of 666444462 is about 25815.5856412362. The cubic root of 666444462 is about 873.4833971231.

The spelling of 666444462 in words is "six hundred sixty-six million, four hundred forty-four thousand, four hundred sixty-two".