6623501545 has 24 divisors (see below), whose sum is σ = 8244872064. Its totient is φ = 5107921728.

The previous prime is 6623501539. The next prime is 6623501557. The reversal of 6623501545 is 5451053266.

It is not a de Polignac number, because 6623501545 - 2¹³ = 6623493353 is a prime.

It is a Duffinian number.

It is an unprimeable number.

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, 4990672 + ... + 4991998.

It is an arithmetic number, because the mean of its divisors is an integer number (343536336).

Almost surely, 2^6623501545 is an apocalyptic number.

It is an amenable number.

6623501545 is a deficient number, since it is larger than the sum of its proper divisors (1621370519).

6623501545 is a wasteful number, since it uses less digits than its factorization.

6623501545 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2577 (or 2548 counting only the distinct ones).

The product of its (nonzero) digits is 108000, while the sum is 37.

The square root of 6623501545 is about 81384.8975240493. The cubic root of 6623501545 is about 1878.0012658002.

The spelling of 6623501545 in words is "six billion, six hundred twenty-three million, five hundred one thousand, five hundred forty-five".