6490706587 has 4 divisors (see below), whose sum is σ = 6524689536. Its totient is φ = 6456723640.

The previous prime is 6490706581. The next prime is 6490706591. The reversal of 6490706587 is 7856070946.

It is a happy number.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is not a de Polignac number, because 6490706587 - 2⁷ = 6490706459 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (6490706581) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 16991188 + ... + 16991569.

It is an arithmetic number, because the mean of its divisors is an integer number (1631172384).

Almost surely, 2^6490706587 is an apocalyptic number.

6490706587 is a deficient number, since it is larger than the sum of its proper divisors (33982949).

6490706587 is a wasteful number, since it uses less digits than its factorization.

6490706587 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 33982948.

The product of its (nonzero) digits is 2540160, while the sum is 52.

The square root of 6490706587 is about 80564.9215663989. The cubic root of 6490706587 is about 1865.3657242412.

The spelling of 6490706587 in words is "six billion, four hundred ninety million, seven hundred six thousand, five hundred eighty-seven".