66950859 has 8 divisors (see below), whose sum is σ = 89324352. Its totient is φ = 44605640.

The previous prime is 66950857. The next prime is 66950881. The reversal of 66950859 is 95805966.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 66950859 - 2¹ = 66950857 is a prime.

It is not an unprimeable number, because it can be changed into a prime (66950857) 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, 729 + ... + 11594.

It is an arithmetic number, because the mean of its divisors is an integer number (11165544).

Almost surely, 2^66950859 is an apocalyptic number.

66950859 is a deficient number, since it is larger than the sum of its proper divisors (22373493).

66950859 is a wasteful number, since it uses less digits than its factorization.

66950859 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 14137.

The product of its (nonzero) digits is 583200, while the sum is 48.

The square root of 66950859 is about 8182.3504569286. The cubic root of 66950859 is about 406.0554879794.

The spelling of 66950859 in words is "sixty-six million, nine hundred fifty thousand, eight hundred fifty-nine".