40637805 has 32 divisors (see below), whose sum is σ = 70371840. Its totient is φ = 19906560.

The previous prime is 40637801. The next prime is 40637809. The reversal of 40637805 is 50873604.

40637805 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is an interprime number because it is at equal distance from previous prime (40637801) and next prime (40637809).

It is not a de Polignac number, because 40637805 - 2² = 40637801 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (40637801) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 52461 + ... + 53229.

It is an arithmetic number, because the mean of its divisors is an integer number (2199120).

Almost surely, 2^40637805 is an apocalyptic number.

It is an amenable number.

40637805 is a deficient number, since it is larger than the sum of its proper divisors (29734035).

40637805 is a wasteful number, since it uses less digits than its factorization.

40637805 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1061.

The product of its (nonzero) digits is 20160, while the sum is 33.

The square root of 40637805 is about 6374.7788196925. The cubic root of 40637805 is about 343.8033314499.

The spelling of 40637805 in words is "forty million, six hundred thirty-seven thousand, eight hundred five".