40712647 has 2 divisors, whose sum is σ = 40712648. Its totient is φ = 40712646.

The previous prime is 40712621. The next prime is 40712689. The reversal of 40712647 is 74621704.

It is a weak prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-40712647 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (40782647) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 20356323 + 20356324.

It is an arithmetic number, because the mean of its divisors is an integer number (20356324).

Almost surely, 2^40712647 is an apocalyptic number.

40712647 is a deficient number, since it is larger than the sum of its proper divisors (1).

40712647 is an equidigital number, since it uses as much as digits as its factorization.

40712647 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 9408, while the sum is 31.

The square root of 40712647 is about 6380.6462838807. The cubic root of 40712647 is about 344.0142610592.

The spelling of 40712647 in words is "forty million, seven hundred twelve thousand, six hundred forty-seven".