40872605 has 8 divisors (see below), whose sum is σ = 50372952. Its totient is φ = 31814208.

The previous prime is 40872583. The next prime is 40872647. The reversal of 40872605 is 50627804.

It can be written as a sum of positive squares in 4 ways, for example, as 8916196 + 31956409 = 2986^2 + 5653^2 .

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 40872605 - 2¹⁸ = 40610461 is a prime.

It is a Duffinian 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, 110282 + ... + 110651.

It is an arithmetic number, because the mean of its divisors is an integer number (6296619).

Almost surely, 2^40872605 is an apocalyptic number.

It is an amenable number.

40872605 is a deficient number, since it is larger than the sum of its proper divisors (9500347).

40872605 is a wasteful number, since it uses less digits than its factorization.

40872605 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 220975.

The product of its (nonzero) digits is 13440, while the sum is 32.

The square root of 40872605 is about 6393.1686197065. The cubic root of 40872605 is about 344.4642107013.

The spelling of 40872605 in words is "forty million, eight hundred seventy-two thousand, six hundred five".