66167673 has 32 divisors (see below), whose sum is σ = 104872320. Its totient is φ = 36579840.

The previous prime is 66167663. The next prime is 66167693. The reversal of 66167673 is 37676166.

It is not a de Polignac number, because 66167673 - 2⁴ = 66167657 is a prime.

It is not an unprimeable number, because it can be changed into a prime (66167653) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 37315 + ... + 39047.

It is an arithmetic number, because the mean of its divisors is an integer number (3277260).

Almost surely, 2^66167673 is an apocalyptic number.

It is an amenable number.

66167673 is a deficient number, since it is larger than the sum of its proper divisors (38704647).

66167673 is a wasteful number, since it uses less digits than its factorization.

66167673 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1849.

The product of its digits is 190512, while the sum is 42.

The square root of 66167673 is about 8134.3514185213. The cubic root of 66167673 is about 404.4659383382.

The spelling of 66167673 in words is "sixty-six million, one hundred sixty-seven thousand, six hundred seventy-three".