66246701 has 4 divisors (see below), whose sum is σ = 68531100. Its totient is φ = 63962304.

The previous prime is 66246689. The next prime is 66246707. The reversal of 66246701 is 10764266.

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

It can be written as a sum of positive squares in 2 ways, for example, as 47748100 + 18498601 = 6910^2 + 4301^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-66246701 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (66246707) 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, 1142156 + ... + 1142213.

It is an arithmetic number, because the mean of its divisors is an integer number (17132775).

Almost surely, 2^66246701 is an apocalyptic number.

It is an amenable number.

66246701 is a deficient number, since it is larger than the sum of its proper divisors (2284399).

66246701 is a wasteful number, since it uses less digits than its factorization.

66246701 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2284398.

The product of its (nonzero) digits is 12096, while the sum is 32.

The square root of 66246701 is about 8139.2076395679. The cubic root of 66246701 is about 404.6269002078.

The spelling of 66246701 in words is "sixty-six million, two hundred forty-six thousand, seven hundred one".