40660547 has 2 divisors, whose sum is σ = 40660548. Its totient is φ = 40660546.

The previous prime is 40660541. The next prime is 40660559. The reversal of 40660547 is 74506604.

40660547 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 40660547 - 2⁴ = 40660531 is a prime.

It is not a weakly prime, because it can be changed into another prime (40660541) 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 as a sum of consecutive naturals, namely, 20330273 + 20330274.

It is an arithmetic number, because the mean of its divisors is an integer number (20330274).

Almost surely, 2^40660547 is an apocalyptic number.

40660547 is a deficient number, since it is larger than the sum of its proper divisors (1).

40660547 is an equidigital number, since it uses as much as digits as its factorization.

40660547 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 20160, while the sum is 32.

The square root of 40660547 is about 6376.5623183656. The cubic root of 40660547 is about 343.8674533293.

The spelling of 40660547 in words is "forty million, six hundred sixty thousand, five hundred forty-seven".