666434524 has 24 divisors (see below), whose sum is σ = 1333584000. Its totient is φ = 285461616.

The previous prime is 666434521. The next prime is 666434533. The reversal of 666434524 is 425434666.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (666434521) 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, 58227 + ... + 68725.

It is an arithmetic number, because the mean of its divisors is an integer number (55566000).

Almost surely, 2^666434524 is an apocalyptic number.

It is an amenable number.

666434524 is an abundant number, since it is smaller than the sum of its proper divisors (667149476).

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

666434524 is a wasteful number, since it uses less digits than its factorization.

666434524 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 12777 (or 12775 counting only the distinct ones).

The product of its digits is 414720, while the sum is 40.

The square root of 666434524 is about 25815.3931598959. The cubic root of 666434524 is about 873.4790553153.

The spelling of 666434524 in words is "six hundred sixty-six million, four hundred thirty-four thousand, five hundred twenty-four".