666425430 has 48 divisors (see below), whose sum is σ = 1890227664. Its totient is φ = 161557440.

The previous prime is 666425429. The next prime is 666425443. The reversal of 666425430 is 34524666.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 335589 + ... + 337568.

It is an arithmetic number, because the mean of its divisors is an integer number (39379743).

Almost surely, 2^666425430 is an apocalyptic number.

666425430 is an abundant number, since it is smaller than the sum of its proper divisors (1223802234).

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

666425430 is a wasteful number, since it uses less digits than its factorization.

666425430 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 673181 (or 673178 counting only the distinct ones).

The product of its (nonzero) digits is 103680, while the sum is 36.

The square root of 666425430 is about 25815.2170240732. The cubic root of 666425430 is about 873.4750822045.

The spelling of 666425430 in words is "six hundred sixty-six million, four hundred twenty-five thousand, four hundred thirty".