40668686 has 8 divisors (see below), whose sum is σ = 61097304. Its totient is φ = 20302920.

The previous prime is 40668671. The next prime is 40668697. The reversal of 40668686 is 68686604.

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

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 14060 + ... + 16703.

It is an arithmetic number, because the mean of its divisors is an integer number (7637163).

Almost surely, 2^40668686 is an apocalyptic number.

40668686 is a deficient number, since it is larger than the sum of its proper divisors (20428618).

40668686 is a wasteful number, since it uses less digits than its factorization.

40668686 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 31426.

The product of its (nonzero) digits is 331776, while the sum is 44.

The square root of 40668686 is about 6377.2004829706. The cubic root of 40668686 is about 343.8903957201.

The spelling of 40668686 in words is "forty million, six hundred sixty-eight thousand, six hundred eighty-six".