64669603 has 4 divisors (see below), whose sum is σ = 66045600. Its totient is φ = 63293608.

The previous prime is 64669589. The next prime is 64669607. The reversal of 64669603 is 30696646.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is not a de Polignac number, because 64669603 - 2¹³ = 64661411 is a prime.

It is a super-3 number, since 3×64669603³ (a number of 24 digits) contains 333 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (64669607) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 687928 + ... + 688021.

It is an arithmetic number, because the mean of its divisors is an integer number (16511400).

Almost surely, 2^64669603 is an apocalyptic number.

64669603 is a deficient number, since it is larger than the sum of its proper divisors (1375997).

64669603 is a wasteful number, since it uses less digits than its factorization.

64669603 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1375996.

The product of its (nonzero) digits is 139968, while the sum is 40.

The square root of 64669603 is about 8041.7412915363. The cubic root of 64669603 is about 401.3901692267.

The spelling of 64669603 in words is "sixty-four million, six hundred sixty-nine thousand, six hundred three".