66124667 has 12 divisors (see below), whose sum is σ = 77162040. Its totient is φ = 56500416.

The previous prime is 66124649. The next prime is 66124687. The reversal of 66124667 is 76642166.

It is not a de Polignac number, because 66124667 - 2⁶ = 66124603 is a prime.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 66124667.

It is not an unprimeable number, because it can be changed into a prime (66124637) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 15059 + ... + 18947.

It is an arithmetic number, because the mean of its divisors is an integer number (6430170).

Almost surely, 2^66124667 is an apocalyptic number.

66124667 is a deficient number, since it is larger than the sum of its proper divisors (11037373).

66124667 is a wasteful number, since it uses less digits than its factorization.

66124667 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 4250 (or 4243 counting only the distinct ones).

The product of its digits is 72576, while the sum is 38.

The square root of 66124667 is about 8131.7075082666. The cubic root of 66124667 is about 404.3782911471.

The spelling of 66124667 in words is "sixty-six million, one hundred twenty-four thousand, six hundred sixty-seven".