66024023 has 4 divisors (see below), whose sum is σ = 71102808. Its totient is φ = 60945240.

The previous prime is 66023987. The next prime is 66024083. The reversal of 66024023 is 32042066.

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

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-66024023 is a prime.

It is a super-2 number, since 2×66024023² = 8718343226209058, which contains 22 as substring.

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 66024023.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (66024083) 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, 2539373 + ... + 2539398.

It is an arithmetic number, because the mean of its divisors is an integer number (17775702).

Almost surely, 2^66024023 is an apocalyptic number.

66024023 is a deficient number, since it is larger than the sum of its proper divisors (5078785).

66024023 is a wasteful number, since it uses less digits than its factorization.

66024023 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 5078784.

The product of its (nonzero) digits is 1728, while the sum is 23.

The square root of 66024023 is about 8125.5167835652. The cubic root of 66024023 is about 404.1730277857.

Adding to 66024023 its reverse (32042066), we get a palindrome (98066089).

The spelling of 66024023 in words is "sixty-six million, twenty-four thousand, twenty-three".