666574446 has 16 divisors (see below), whose sum is σ = 1342098000. Its totient is φ = 220699968.

The previous prime is 666574439. The next prime is 666574453. The reversal of 666574446 is 644475666.

It is an interprime number because it is at equal distance from previous prime (666574439) and next prime (666574453).

It is a junction number, because it is equal to n+sod(n) for n = 666574395 and 666574404.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 371911 + ... + 373698.

It is an arithmetic number, because the mean of its divisors is an integer number (83881125).

Almost surely, 2^666574446 is an apocalyptic number.

666574446 is an abundant number, since it is smaller than the sum of its proper divisors (675523554).

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

666574446 is a wasteful number, since it uses less digits than its factorization.

666574446 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 745763.

The product of its digits is 2903040, while the sum is 48.

The square root of 666574446 is about 25818.1030674215. The cubic root of 666574446 is about 873.5401817924.

The spelling of 666574446 in words is "six hundred sixty-six million, five hundred seventy-four thousand, four hundred forty-six".