66608562 has 16 divisors (see below), whose sum is σ = 133654752. Its totient is φ = 22129920.

The previous prime is 66608561. The next prime is 66608587. The reversal of 66608562 is 26580666.

It is a self number, because there is not a number n which added to its sum of digits gives 66608562.

It is not an unprimeable number, because it can be changed into a prime (66608561) 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, 16239 + ... + 19922.

It is an arithmetic number, because the mean of its divisors is an integer number (8353422).

Almost surely, 2^66608562 is an apocalyptic number.

66608562 is an abundant number, since it is smaller than the sum of its proper divisors (67046190).

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

66608562 is a wasteful number, since it uses less digits than its factorization.

66608562 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 36473.

The product of its (nonzero) digits is 103680, while the sum is 39.

The square root of 66608562 is about 8161.4068640155. The cubic root of 66608562 is about 405.3622973577.

The spelling of 66608562 in words is "sixty-six million, six hundred eight thousand, five hundred sixty-two".