66608252 has 12 divisors (see below), whose sum is σ = 116827200. Its totient is φ = 33229056.

The previous prime is 66608239. The next prime is 66608257. The reversal of 66608252 is 25280666.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (66608257) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 16748 + ... + 20339.

It is an arithmetic number, because the mean of its divisors is an integer number (9735600).

Almost surely, 2^66608252 is an apocalyptic number.

It is an amenable number.

66608252 is a deficient number, since it is larger than the sum of its proper divisors (50218948).

66608252 is a wasteful number, since it uses less digits than its factorization.

66608252 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 37540 (or 37538 counting only the distinct ones).

The product of its (nonzero) digits is 34560, while the sum is 35.

The square root of 66608252 is about 8161.3878721698. The cubic root of 66608252 is about 405.3616684971.

The spelling of 66608252 in words is "sixty-six million, six hundred eight thousand, two hundred fifty-two".