40643703 has 12 divisors (see below), whose sum is σ = 60732360. Its totient is φ = 26161296.

The previous prime is 40643693. The next prime is 40643711. The reversal of 40643703 is 30734604.

It is not a de Polignac number, because 40643703 - 2⁵ = 40643671 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (40643003) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 77601 + ... + 78122.

It is an arithmetic number, because the mean of its divisors is an integer number (5061030).

Almost surely, 2^40643703 is an apocalyptic number.

40643703 is a deficient number, since it is larger than the sum of its proper divisors (20088657).

40643703 is a wasteful number, since it uses less digits than its factorization.

40643703 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 155758 (or 155755 counting only the distinct ones).

The product of its (nonzero) digits is 6048, while the sum is 27.

The square root of 40643703 is about 6375.2414071939. The cubic root of 40643703 is about 343.8199633682.

Subtracting from 40643703 its reverse (30734604), we obtain a palindrome (9909099).

The spelling of 40643703 in words is "forty million, six hundred forty-three thousand, seven hundred three".