6406274587 has 2 divisors, whose sum is σ = 6406274588. Its totient is φ = 6406274586.

The previous prime is 6406274533. The next prime is 6406274621. The reversal of 6406274587 is 7854726046.

It is a strong prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-6406274587 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 6406274587.

It is not a weakly prime, because it can be changed into another prime (6406274687) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 3203137293 + 3203137294.

It is an arithmetic number, because the mean of its divisors is an integer number (3203137294).

Almost surely, 2^6406274587 is an apocalyptic number.

6406274587 is a deficient number, since it is larger than the sum of its proper divisors (1).

6406274587 is an equidigital number, since it uses as much as digits as its factorization.

6406274587 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 2257920, while the sum is 49.

The square root of 6406274587 is about 80039.2065615346. The cubic root of 6406274587 is about 1857.2420863692.

The spelling of 6406274587 in words is "six billion, four hundred six million, two hundred seventy-four thousand, five hundred eighty-seven".