6690039067 has 4 divisors (see below), whose sum is σ = 6700882536. Its totient is φ = 6679195600.

The previous prime is 6690039047. The next prime is 6690039077. The reversal of 6690039067 is 7609300966.

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 6690039067 - 2³¹ = 4542555419 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (6690039007) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 5420809 + ... + 5422042.

It is an arithmetic number, because the mean of its divisors is an integer number (1675220634).

Almost surely, 2^6690039067 is an apocalyptic number.

6690039067 is a deficient number, since it is larger than the sum of its proper divisors (10843469).

6690039067 is a wasteful number, since it uses less digits than its factorization.

6690039067 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 10843468.

The product of its (nonzero) digits is 367416, while the sum is 46.

The square root of 6690039067 is about 81792.6590043385. The cubic root of 6690039067 is about 1884.2689195415.

The spelling of 6690039067 in words is "six billion, six hundred ninety million, thirty-nine thousand, sixty-seven".