66885372 has 24 divisors (see below), whose sum is σ = 173406800. Its totient is φ = 22295088.

The previous prime is 66885367. The next prime is 66885373. The reversal of 66885372 is 27358866.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (66885373) 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, 309547 + ... + 309762.

Almost surely, 2^66885372 is an apocalyptic number.

It is an amenable number.

66885372 is an abundant number, since it is smaller than the sum of its proper divisors (106521428).

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

66885372 is a wasteful number, since it uses less digits than its factorization.

66885372 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 619322 (or 619314 counting only the distinct ones).

The product of its digits is 483840, while the sum is 45.

The square root of 66885372 is about 8178.3477548952. The cubic root of 66885372 is about 405.9230523849.

The spelling of 66885372 in words is "sixty-six million, eight hundred eighty-five thousand, three hundred seventy-two".