6497789 has 4 divisors (see below), whose sum is σ = 6558624. Its totient is φ = 6436956.

The previous prime is 6497779. The next prime is 6497807. The reversal of 6497789 is 9877946.

It is a happy number.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-6497789 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (6497779) 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, 30257 + ... + 30470.

It is an arithmetic number, because the mean of its divisors is an integer number (1639656).

Almost surely, 2^6497789 is an apocalyptic number.

It is an amenable number.

6497789 is a deficient number, since it is larger than the sum of its proper divisors (60835).

6497789 is a wasteful number, since it uses less digits than its factorization.

6497789 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 60834.

The product of its digits is 762048, while the sum is 50.

The square root of 6497789 is about 2549.0761071416. The cubic root of 6497789 is about 186.6043949740.

The spelling of 6497789 in words is "six million, four hundred ninety-seven thousand, seven hundred eighty-nine".