66124299 has 4 divisors (see below), whose sum is σ = 88165736. Its totient is φ = 44082864.

The previous prime is 66124277. The next prime is 66124319. The reversal of 66124299 is 99242166.

It is a semiprime because it is the product of two primes.

It is not a de Polignac number, because 66124299 - 2⁷ = 66124171 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (66124229) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 11020714 + ... + 11020719.

It is an arithmetic number, because the mean of its divisors is an integer number (22041434).

Almost surely, 2^66124299 is an apocalyptic number.

66124299 is a deficient number, since it is larger than the sum of its proper divisors (22041437).

66124299 is a wasteful number, since it uses less digits than its factorization.

66124299 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 22041436.

The product of its digits is 46656, while the sum is 39.

The square root of 66124299 is about 8131.6848807612. The cubic root of 66124299 is about 404.3775409909.

The spelling of 66124299 in words is "sixty-six million, one hundred twenty-four thousand, two hundred ninety-nine".