40745644 has 6 divisors (see below), whose sum is σ = 71304884. Its totient is φ = 20372820.

The previous prime is 40745641. The next prime is 40745647. The reversal of 40745644 is 44654704.

It is an interprime number because it is at equal distance from previous prime (40745641) and next prime (40745647).

It is not an unprimeable number, because it can be changed into a prime (40745641) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 5093202 + ... + 5093209.

Almost surely, 2^40745644 is an apocalyptic number.

It is an amenable number.

40745644 is a deficient number, since it is larger than the sum of its proper divisors (30559240).

40745644 is a wasteful number, since it uses less digits than its factorization.

40745644 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 10186415 (or 10186413 counting only the distinct ones).

The product of its (nonzero) digits is 53760, while the sum is 34.

The square root of 40745644 is about 6383.2314700315. The cubic root of 40745644 is about 344.1071754569.

The spelling of 40745644 in words is "forty million, seven hundred forty-five thousand, six hundred forty-four".