6497662787 has 24 divisors (see below), whose sum is σ = 8258717232. Its totient is φ = 5055086400.

The previous prime is 6497662777. The next prime is 6497662793. The reversal of 6497662787 is 7872667946.

It is not a de Polignac number, because 6497662787 - 2¹⁴ = 6497646403 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (6497662757) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 342737 + ... + 361197.

It is an arithmetic number, because the mean of its divisors is an integer number (344113218).

Almost surely, 2^6497662787 is an apocalyptic number.

6497662787 is a deficient number, since it is larger than the sum of its proper divisors (1761054445).

6497662787 is a wasteful number, since it uses less digits than its factorization.

6497662787 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 19139 (or 19132 counting only the distinct ones).

The product of its digits is 42674688, while the sum is 62.

The square root of 6497662787 is about 80608.0814000681. The cubic root of 6497662787 is about 1866.0318676547.

The spelling of 6497662787 in words is "six billion, four hundred ninety-seven million, six hundred sixty-two thousand, seven hundred eighty-seven".