66006562 has 4 divisors (see below), whose sum is σ = 99009846. Its totient is φ = 33003280.

The previous prime is 66006559. The next prime is 66006569. The reversal of 66006562 is 26560066.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in only one way, i.e., 39576681 + 26429881 = 6291^2 + 5141^2 .

It is not an unprimeable number, because it can be changed into a prime (66006569) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 16501639 + ... + 16501642.

Almost surely, 2^66006562 is an apocalyptic number.

66006562 is a deficient number, since it is larger than the sum of its proper divisors (33003284).

66006562 is a wasteful number, since it uses less digits than its factorization.

66006562 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 33003283.

The product of its (nonzero) digits is 12960, while the sum is 31.

The square root of 66006562 is about 8124.4422577799. The cubic root of 66006562 is about 404.1373948593.

The spelling of 66006562 in words is "sixty-six million, six thousand, five hundred sixty-two".