66967023 has 4 divisors (see below), whose sum is σ = 89289368. Its totient is φ = 44644680.

The previous prime is 66967013. The next prime is 66967031. The reversal of 66967023 is 32076966.

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

It is not a de Polignac number, because 66967023 - 2¹² = 66962927 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (66967013) 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, 11161168 + ... + 11161173.

It is an arithmetic number, because the mean of its divisors is an integer number (22322342).

Almost surely, 2^66967023 is an apocalyptic number.

66967023 is a deficient number, since it is larger than the sum of its proper divisors (22322345).

66967023 is a wasteful number, since it uses less digits than its factorization.

66967023 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 22322344.

The product of its (nonzero) digits is 81648, while the sum is 39.

The square root of 66967023 is about 8183.3381330604. The cubic root of 66967023 is about 406.0881634515.

The spelling of 66967023 in words is "sixty-six million, nine hundred sixty-seven thousand, twenty-three".