666434430 has 48 divisors (see below), whose sum is σ = 1808071200. Its totient is φ = 169988544.

The previous prime is 666434429. The next prime is 666434437. The reversal of 666434430 is 34434666.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (666434437) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 158905 + ... + 163044.

It is an arithmetic number, because the mean of its divisors is an integer number (37668150).

Almost surely, 2^666434430 is an apocalyptic number.

666434430 is an abundant number, since it is smaller than the sum of its proper divisors (1141636770).

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

666434430 is a wasteful number, since it uses less digits than its factorization.

666434430 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 321985 (or 321982 counting only the distinct ones).

The product of its (nonzero) digits is 124416, while the sum is 36.

The square root of 666434430 is about 25815.3913392767. The cubic root of 666434430 is about 873.4790142475.

The spelling of 666434430 in words is "six hundred sixty-six million, four hundred thirty-four thousand, four hundred thirty".