7040661487 has 2 divisors, whose sum is σ = 7040661488. Its totient is φ = 7040661486.

The previous prime is 7040661443. The next prime is 7040661533. The reversal of 7040661487 is 7841660407.

It is a weak prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-7040661487 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (7040661787) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 3520330743 + 3520330744.

It is an arithmetic number, because the mean of its divisors is an integer number (3520330744).

Almost surely, 2^7040661487 is an apocalyptic number.

7040661487 is a deficient number, since it is larger than the sum of its proper divisors (1).

7040661487 is an equidigital number, since it uses as much as digits as its factorization.

7040661487 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 225792, while the sum is 43.

The square root of 7040661487 is about 83908.6496554437. The cubic root of 7040661487 is about 1916.6279686335.

The spelling of 7040661487 in words is "seven billion, forty million, six hundred sixty-one thousand, four hundred eighty-seven".