40361685 has 32 divisors (see below), whose sum is σ = 79484160. Its totient is φ = 17031168.

The previous prime is 40361677. The next prime is 40361701. The reversal of 40361685 is 58616304.

It is not a de Polignac number, because 40361685 - 2³ = 40361677 is a prime.

It is a Curzon number.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 13420 + ... + 16149.

It is an arithmetic number, because the mean of its divisors is an integer number (2483880).

Almost surely, 2^40361685 is an apocalyptic number.

It is an amenable number.

40361685 is a deficient number, since it is larger than the sum of its proper divisors (39122475).

40361685 is a wasteful number, since it uses less digits than its factorization.

40361685 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 29597.

The product of its (nonzero) digits is 17280, while the sum is 33.

The square root of 40361685 is about 6353.0846838367. The cubic root of 40361685 is about 343.0228857620.

Adding to 40361685 its reverse (58616304), we get a palindrome (98977989).

The spelling of 40361685 in words is "forty million, three hundred sixty-one thousand, six hundred eighty-five".