6690464627 has 32 divisors (see below), whose sum is σ = 8499769344. Its totient is φ = 5114973600.

The previous prime is 6690464611. The next prime is 6690464629. The reversal of 6690464627 is 7264640966.

It is a happy number.

It is not a de Polignac number, because 6690464627 - 2⁴ = 6690464611 is a prime.

It is a Smith number, since the sum of its digits (50) coincides with the sum of the digits of its prime factors. Since it is squarefree, it is also a hoax number.

It is not an unprimeable number, because it can be changed into a prime (6690464629) 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 31 ways as a sum of consecutive naturals, for example, 1354352 + ... + 1359282.

It is an arithmetic number, because the mean of its divisors is an integer number (265617792).

Almost surely, 2^6690464627 is an apocalyptic number.

6690464627 is a gapful number since it is divisible by the number (67) formed by its first and last digit.

6690464627 is a deficient number, since it is larger than the sum of its proper divisors (1809304717).

6690464627 is a wasteful number, since it uses less digits than its factorization.

6690464627 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 5279.

The product of its (nonzero) digits is 2612736, while the sum is 50.

The square root of 6690464627 is about 81795.2604189265. The cubic root of 6690464627 is about 1884.3088720975.

The spelling of 6690464627 in words is "six billion, six hundred ninety million, four hundred sixty-four thousand, six hundred twenty-seven".