66246705 has 96 divisors (see below), whose sum is σ = 141523200. Its totient is φ = 27979776.

The previous prime is 66246689. The next prime is 66246707. The reversal of 66246705 is 50764266.

It is not a de Polignac number, because 66246705 - 2⁴ = 66246689 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 66246705.

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 95 ways as a sum of consecutive naturals, for example, 476526 + ... + 476664.

It is an arithmetic number, because the mean of its divisors is an integer number (1474200).

Almost surely, 2^66246705 is an apocalyptic number.

It is an amenable number.

66246705 is an abundant number, since it is smaller than the sum of its proper divisors (75276495).

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

66246705 is a wasteful number, since it uses less digits than its factorization.

66246705 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 263 (or 260 counting only the distinct ones).

The product of its (nonzero) digits is 60480, while the sum is 36.

The square root of 66246705 is about 8139.2078852920. The cubic root of 66246705 is about 404.6269083516.

The spelling of 66246705 in words is "sixty-six million, two hundred forty-six thousand, seven hundred five".