6664513403 has 8 divisors (see below), whose sum is σ = 6905700480. Its totient is φ = 6424084800.

The previous prime is 6664513363. The next prime is 6664513421. The reversal of 6664513403 is 3043154666.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 6664513403 - 2¹⁸ = 6664251259 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (6664513483) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 171698 + ... + 206903.

It is an arithmetic number, because the mean of its divisors is an integer number (863212560).

Almost surely, 2^6664513403 is an apocalyptic number.

6664513403 is a deficient number, since it is larger than the sum of its proper divisors (241187077).

6664513403 is a wasteful number, since it uses less digits than its factorization.

6664513403 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 379237.

The product of its (nonzero) digits is 155520, while the sum is 38.

The square root of 6664513403 is about 81636.4710347036. The cubic root of 6664513403 is about 1881.8694060734.

The spelling of 6664513403 in words is "six billion, six hundred sixty-four million, five hundred thirteen thousand, four hundred three".