64983587506 has 16 divisors (see below), whose sum is σ = 97931602944. Its totient is φ = 32339777184.

The previous prime is 64983587477. The next prime is 64983587519. The reversal of 64983587506 is 60578538946.

64983587506 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 2978670 + ... + 3000406.

It is an arithmetic number, because the mean of its divisors is an integer number (6120725184).

Almost surely, 2^64983587506 is an apocalyptic number.

64983587506 is a deficient number, since it is larger than the sum of its proper divisors (32948015438).

64983587506 is a wasteful number, since it uses less digits than its factorization.

64983587506 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 28665.

The product of its (nonzero) digits is 43545600, while the sum is 61.

The spelling of 64983587506 in words is "sixty-four billion, nine hundred eighty-three million, five hundred eighty-seven thousand, five hundred six".