40801686 has 16 divisors (see below), whose sum is σ = 82987200. Its totient is φ = 13369928.

The previous prime is 40801667. The next prime is 40801757. The reversal of 40801686 is 68610804.

It is a Curzon number.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 57276 + ... + 57983.

It is an arithmetic number, because the mean of its divisors is an integer number (5186700).

Almost surely, 2^40801686 is an apocalyptic number.

40801686 is an abundant number, since it is smaller than the sum of its proper divisors (42185514).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

40801686 is a wasteful number, since it uses less digits than its factorization.

40801686 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 115323.

The product of its (nonzero) digits is 9216, while the sum is 33.

The square root of 40801686 is about 6387.6197444745. The cubic root of 40801686 is about 344.2648660944.

The spelling of 40801686 in words is "forty million, eight hundred one thousand, six hundred eighty-six".