64603688887 has 8 divisors (see below), whose sum is σ = 65675001392. Its totient is φ = 63532771200.

The previous prime is 64603688749. The next prime is 64603688909. The reversal of 64603688887 is 78888630646.

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 64603688887 - 2²³ = 64595300279 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (64603688587) 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, 240868 + ... + 432694.

It is an arithmetic number, because the mean of its divisors is an integer number (8209375174).

Almost surely, 2^64603688887 is an apocalyptic number.

64603688887 is a deficient number, since it is larger than the sum of its proper divisors (1071312505).

64603688887 is a wasteful number, since it uses less digits than its factorization.

64603688887 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 197409.

The product of its (nonzero) digits is 74317824, while the sum is 64.

The spelling of 64603688887 in words is "sixty-four billion, six hundred three million, six hundred eighty-eight thousand, eight hundred eighty-seven".