40750643 has 2 divisors, whose sum is σ = 40750644. Its totient is φ = 40750642.

The previous prime is 40750637. The next prime is 40750657. The reversal of 40750643 is 34605704.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 40750643 - 2⁸ = 40750387 is a prime.

It is a super-2 number, since 2×40750643² = 3321229809826898, which contains 22 as substring.

It is not a weakly prime, because it can be changed into another prime (40750613) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 20375321 + 20375322.

It is an arithmetic number, because the mean of its divisors is an integer number (20375322).

Almost surely, 2^40750643 is an apocalyptic number.

40750643 is a deficient number, since it is larger than the sum of its proper divisors (1).

40750643 is an equidigital number, since it uses as much as digits as its factorization.

40750643 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 10080, while the sum is 29.

The square root of 40750643 is about 6383.6230308501. The cubic root of 40750643 is about 344.1212474841.

The spelling of 40750643 in words is "forty million, seven hundred fifty thousand, six hundred forty-three".