64645603 has 8 divisors (see below), whose sum is σ = 70580736. Its totient is φ = 58720200.

The previous prime is 64645597. The next prime is 64645613. The reversal of 64645603 is 30654646.

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

It is a de Polignac number, because none of the positive numbers 2^k-64645603 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (64645613) 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, 24150 + ... + 26692.

It is an arithmetic number, because the mean of its divisors is an integer number (8822592).

Almost surely, 2^64645603 is an apocalyptic number.

64645603 is a deficient number, since it is larger than the sum of its proper divisors (5935133).

64645603 is a wasteful number, since it uses less digits than its factorization.

64645603 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4865.

The product of its (nonzero) digits is 51840, while the sum is 34.

The square root of 64645603 is about 8040.2489389322. The cubic root of 64645603 is about 401.3405088218.

The spelling of 64645603 in words is "sixty-four million, six hundred forty-five thousand, six hundred three".