67940023 has 8 divisors (see below), whose sum is σ = 68580848. Its totient is φ = 67302144.

The previous prime is 67940009. The next prime is 67940057. The reversal of 67940023 is 32004976.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-67940023 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 (67940063) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 100615 + ... + 101287.

It is an arithmetic number, because the mean of its divisors is an integer number (8572606).

Almost surely, 2^67940023 is an apocalyptic number.

67940023 is a deficient number, since it is larger than the sum of its proper divisors (640825).

67940023 is a wasteful number, since it uses less digits than its factorization.

67940023 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1473.

The product of its (nonzero) digits is 9072, while the sum is 31.

The square root of 67940023 is about 8242.5738091933. The cubic root of 67940023 is about 408.0454722323.

Adding to 67940023 its reverse (32004976), we get a palindrome (99944999).

The spelling of 67940023 in words is "sixty-seven million, nine hundred forty thousand, twenty-three".