6690682407 has 4 divisors (see below), whose sum is σ = 8920909880. Its totient is φ = 4460454936.

The previous prime is 6690682301. The next prime is 6690682417. The reversal of 6690682407 is 7042860966.

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

It is not a de Polignac number, because 6690682407 - 2¹⁰ = 6690681383 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 (6690682417) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 1115113732 + ... + 1115113737.

It is an arithmetic number, because the mean of its divisors is an integer number (2230227470).

Almost surely, 2^6690682407 is an apocalyptic number.

6690682407 is a deficient number, since it is larger than the sum of its proper divisors (2230227473).

6690682407 is a wasteful number, since it uses less digits than its factorization.

6690682407 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2230227472.

The product of its (nonzero) digits is 870912, while the sum is 48.

The square root of 6690682407 is about 81796.5916588216. The cubic root of 6690682407 is about 1884.3293171316.

The spelling of 6690682407 in words is "six billion, six hundred ninety million, six hundred eighty-two thousand, four hundred seven".