66425912 has 32 divisors (see below), whose sum is σ = 144300000. Its totient is φ = 28076544.

The previous prime is 66425903. The next prime is 66425929. The reversal of 66425912 is 21952466.

It is a happy number.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 4037 + ... + 12212.

It is an arithmetic number, because the mean of its divisors is an integer number (4509375).

Almost surely, 2^66425912 is an apocalyptic number.

It is an amenable number.

66425912 is an abundant number, since it is smaller than the sum of its proper divisors (77874088).

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

66425912 is a wasteful number, since it uses less digits than its factorization.

66425912 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 16335 (or 16331 counting only the distinct ones).

The product of its digits is 25920, while the sum is 35.

The square root of 66425912 is about 8150.2093224653. The cubic root of 66425912 is about 404.9914381160.

The spelling of 66425912 in words is "sixty-six million, four hundred twenty-five thousand, nine hundred twelve".