40166687 has 8 divisors (see below), whose sum is σ = 44837760. Its totient is φ = 35665560.

The previous prime is 40166603. The next prime is 40166713. The reversal of 40166687 is 78666104.

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

It is a cyclic number.

It is not a de Polignac number, because 40166687 - 2⁸ = 40166431 is a prime.

It is a super-2 number, since 2×40166687² = 3226725489111938, which contains 22 as substring.

It is a self number, because there is not a number n which added to its sum of digits gives 40166687.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (40166587) 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, 41987 + ... + 42932.

It is an arithmetic number, because the mean of its divisors is an integer number (5604720).

Almost surely, 2^40166687 is an apocalyptic number.

40166687 is a deficient number, since it is larger than the sum of its proper divisors (4671073).

40166687 is a wasteful number, since it uses less digits than its factorization.

40166687 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 84973.

The product of its (nonzero) digits is 48384, while the sum is 38.

The square root of 40166687 is about 6337.7193847629. The cubic root of 40166687 is about 342.4695822526.

The spelling of 40166687 in words is "forty million, one hundred sixty-six thousand, six hundred eighty-seven".