6691456023 has 24 divisors (see below), whose sum is σ = 10444726512. Its totient is φ = 3799321344.

The previous prime is 6691456019. The next prime is 6691456039. The reversal of 6691456023 is 3206541966.

It is not a de Polignac number, because 6691456023 - 2² = 6691456019 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (6691456073) 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 23 ways as a sum of consecutive naturals, for example, 121890 + ... + 168047.

It is an arithmetic number, because the mean of its divisors is an integer number (435196938).

Almost surely, 2^6691456023 is an apocalyptic number.

6691456023 is a deficient number, since it is larger than the sum of its proper divisors (3753270489).

6691456023 is a wasteful number, since it uses less digits than its factorization.

6691456023 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 290111 (or 290104 counting only the distinct ones).

The product of its (nonzero) digits is 233280, while the sum is 42.

The square root of 6691456023 is about 81801.3204233281. The cubic root of 6691456023 is about 1884.4019400740.

Adding to 6691456023 its reverse (3206541966), we get a palindrome (9897997989).

The spelling of 6691456023 in words is "six billion, six hundred ninety-one million, four hundred fifty-six thousand, twenty-three".