64673632606 has 16 divisors (see below), whose sum is σ = 106377927408. Its totient is φ = 29244787200.

The previous prime is 64673632567. The next prime is 64673632609. The reversal of 64673632606 is 60623637646.

It is a self number, because there is not a number n which added to its sum of digits gives 64673632606.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (64673632609) 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, 7611585 + ... + 7620076.

It is an arithmetic number, because the mean of its divisors is an integer number (6648620463).

Almost surely, 2^64673632606 is an apocalyptic number.

64673632606 is a deficient number, since it is larger than the sum of its proper divisors (41704294802).

64673632606 is a wasteful number, since it uses less digits than its factorization.

64673632606 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 15231867.

The product of its (nonzero) digits is 3919104, while the sum is 49.

The spelling of 64673632606 in words is "sixty-four billion, six hundred seventy-three million, six hundred thirty-two thousand, six hundred six".