66948159 has 16 divisors (see below), whose sum is σ = 94681440. Its totient is φ = 41932800.

The previous prime is 66948151. The next prime is 66948173. The reversal of 66948159 is 95184966.

It is not a de Polignac number, because 66948159 - 2³ = 66948151 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (66948151) 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, 50809 + ... + 52109.

It is an arithmetic number, because the mean of its divisors is an integer number (5917590).

Almost surely, 2^66948159 is an apocalyptic number.

66948159 is a deficient number, since it is larger than the sum of its proper divisors (27733281).

66948159 is a wasteful number, since it uses less digits than its factorization.

66948159 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2330.

The product of its digits is 466560, while the sum is 48.

The square root of 66948159 is about 8182.1854659987. The cubic root of 66948159 is about 406.0500294258.

It can be divided in two parts, 669 and 48159, that added together give a triangular number (48828 = T₃₁₂).

The spelling of 66948159 in words is "sixty-six million, nine hundred forty-eight thousand, one hundred fifty-nine".