66612536 has 64 divisors (see below), whose sum is σ = 136080000. Its totient is φ = 30499840.

The previous prime is 66612527. The next prime is 66612541. The reversal of 66612536 is 63521666.

It is a junction number, because it is equal to n+sod(n) for n = 66612496 and 66612505.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 446990 + ... + 447138.

It is an arithmetic number, because the mean of its divisors is an integer number (2126250).

Almost surely, 2^66612536 is an apocalyptic number.

It is an amenable number.

66612536 is an abundant number, since it is smaller than the sum of its proper divisors (69467464).

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

66612536 is a wasteful number, since it uses less digits than its factorization.

66612536 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 272 (or 268 counting only the distinct ones).

The product of its digits is 38880, while the sum is 35.

The square root of 66612536 is about 8161.6503233108. The cubic root of 66612536 is about 405.3703587725.

The spelling of 66612536 in words is "sixty-six million, six hundred twelve thousand, five hundred thirty-six".