66562023 has 16 divisors (see below), whose sum is σ = 101028096. Its totient is φ = 38586240.

The previous prime is 66562019. The next prime is 66562043. The reversal of 66562023 is 32026566.

It is not a de Polignac number, because 66562023 - 2² = 66562019 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (66562043) 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, 43090 + ... + 44607.

It is an arithmetic number, because the mean of its divisors is an integer number (6314256).

Almost surely, 2^66562023 is an apocalyptic number.

66562023 is a deficient number, since it is larger than the sum of its proper divisors (34466073).

66562023 is a wasteful number, since it uses less digits than its factorization.

66562023 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 87734.

The product of its (nonzero) digits is 12960, while the sum is 30.

The square root of 66562023 is about 8158.5552029756. Note that the first 3 decimals coincide. The cubic root of 66562023 is about 405.2678672987.

Adding to 66562023 its reverse (32026566), we get a palindrome (98588589).

The spelling of 66562023 in words is "sixty-six million, five hundred sixty-two thousand, twenty-three".