66514679 has 16 divisors (see below), whose sum is σ = 84860160. Its totient is φ = 50621760.

The previous prime is 66514673. The next prime is 66514699. The reversal of 66514679 is 97641566.

It is a happy number.

It is not a de Polignac number, because 66514679 - 2¹⁶ = 66449143 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (66514673) 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, 6734 + ... + 13355.

It is an arithmetic number, because the mean of its divisors is an integer number (5303760).

Almost surely, 2^66514679 is an apocalyptic number.

66514679 is a deficient number, since it is larger than the sum of its proper divisors (18345481).

66514679 is a wasteful number, since it uses less digits than its factorization.

66514679 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 20150.

The product of its digits is 272160, while the sum is 44.

The square root of 66514679 is about 8155.6531927247. The cubic root of 66514679 is about 405.1717586774.

The spelling of 66514679 in words is "sixty-six million, five hundred fourteen thousand, six hundred seventy-nine".