6690867459 has 4 divisors (see below), whose sum is σ = 8921156616. Its totient is φ = 4460578304.

The previous prime is 6690867457. The next prime is 6690867473. The reversal of 6690867459 is 9547680966.

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 6690867459 - 2¹ = 6690867457 is a prime.

It is not an unprimeable number, because it can be changed into a prime (6690867457) 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, 1115144574 + ... + 1115144579.

It is an arithmetic number, because the mean of its divisors is an integer number (2230289154).

Almost surely, 2^6690867459 is an apocalyptic number.

6690867459 is a deficient number, since it is larger than the sum of its proper divisors (2230289157).

6690867459 is a wasteful number, since it uses less digits than its factorization.

6690867459 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2230289156.

The product of its (nonzero) digits is 19595520, while the sum is 60.

The square root of 6690867459 is about 81797.7228228268. The cubic root of 6690867459 is about 1884.3466893354.

The spelling of 6690867459 in words is "six billion, six hundred ninety million, eight hundred sixty-seven thousand, four hundred fifty-nine".