646062384985 has 32 divisors (see below), whose sum is σ = 834969617280. Its totient is φ = 478100640768.

The previous prime is 646062384983. The next prime is 646062384997. The reversal of 646062384985 is 589483260646.

646062384985 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is not a de Polignac number, because 646062384985 - 2¹ = 646062384983 is a prime.

It is not an unprimeable number, because it can be changed into a prime (646062384983) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 30345154 + ... + 30366436.

It is an arithmetic number, because the mean of its divisors is an integer number (26092800540).

Almost surely, 2^646062384985 is an apocalyptic number.

It is an amenable number.

646062384985 is a deficient number, since it is larger than the sum of its proper divisors (188907232295).

646062384985 is a wasteful number, since it uses less digits than its factorization.

646062384985 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 27417.

The product of its (nonzero) digits is 59719680, while the sum is 61.

The spelling of 646062384985 in words is "six hundred forty-six billion, sixty-two million, three hundred eighty-four thousand, nine hundred eighty-five".