40668767 has 4 divisors (see below), whose sum is σ = 40879680. Its totient is φ = 40457856.

The previous prime is 40668763. The next prime is 40668769. The reversal of 40668767 is 76786604.

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

It is a cyclic number.

It is not a de Polignac number, because 40668767 - 2² = 40668763 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 (40668763) 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, 105167 + ... + 105552.

It is an arithmetic number, because the mean of its divisors is an integer number (10219920).

Almost surely, 2^40668767 is an apocalyptic number.

40668767 is a deficient number, since it is larger than the sum of its proper divisors (210913).

40668767 is a wasteful number, since it uses less digits than its factorization.

40668767 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 210912.

The product of its (nonzero) digits is 338688, while the sum is 44.

The square root of 40668767 is about 6377.2068337165. The cubic root of 40668767 is about 343.8906240293.

The spelling of 40668767 in words is "forty million, six hundred sixty-eight thousand, seven hundred sixty-seven".