66011679 has 56 divisors (see below), whose sum is σ = 107446272. Its totient is φ = 40415760.

The previous prime is 66011657. The next prime is 66011711. The reversal of 66011679 is 97611066.

It is not a de Polignac number, because 66011679 - 2¹⁵ = 65978911 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (66011639) by changing a digit.

It is a polite number, since it can be written in 55 ways as a sum of consecutive naturals, for example, 519714 + ... + 519840.

Almost surely, 2^66011679 is an apocalyptic number.

66011679 is a gapful number since it is divisible by the number (69) formed by its first and last digit.

66011679 is a deficient number, since it is larger than the sum of its proper divisors (41434593).

66011679 is a wasteful number, since it uses less digits than its factorization.

66011679 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 199 (or 184 counting only the distinct ones).

The product of its (nonzero) digits is 13608, while the sum is 36.

The square root of 66011679 is about 8124.7571656019. The cubic root of 66011679 is about 404.1478378494.

The spelling of 66011679 in words is "sixty-six million, eleven thousand, six hundred seventy-nine".