64645003 has 8 divisors (see below), whose sum is σ = 65758176. Its totient is φ = 63537600.

The previous prime is 64644997. The next prime is 64645027. The reversal of 64645003 is 30054646.

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 64645003 - 2⁹ = 64644491 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (64645043) 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, 25263 + ... + 27703.

It is an arithmetic number, because the mean of its divisors is an integer number (8219772).

Almost surely, 2^64645003 is an apocalyptic number.

64645003 is a deficient number, since it is larger than the sum of its proper divisors (1113173).

64645003 is a wasteful number, since it uses less digits than its factorization.

64645003 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2885.

The product of its (nonzero) digits is 8640, while the sum is 28.

The square root of 64645003 is about 8040.2116265680. The cubic root of 64645003 is about 401.3392671542.

Adding to 64645003 its reverse (30054646), we get a palindrome (94699649).

The spelling of 64645003 in words is "sixty-four million, six hundred forty-five thousand, three".