66868701 has 16 divisors (see below), whose sum is σ = 95546304. Its totient is φ = 41448704.

The previous prime is 66868699. The next prime is 66868717. The reversal of 66868701 is 10786866.

It is a cyclic number.

It is not a de Polignac number, because 66868701 - 2¹ = 66868699 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (66868001) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 3666 + ... + 12131.

It is an arithmetic number, because the mean of its divisors is an integer number (5971644).

Almost surely, 2^66868701 is an apocalyptic number.

It is an amenable number.

66868701 is a deficient number, since it is larger than the sum of its proper divisors (28677603).

66868701 is a wasteful number, since it uses less digits than its factorization.

66868701 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 15900.

The product of its (nonzero) digits is 96768, while the sum is 42.

The square root of 66868701 is about 8177.3284757309. The cubic root of 66868701 is about 405.8893245043.

The spelling of 66868701 in words is "sixty-six million, eight hundred sixty-eight thousand, seven hundred one".