64973500201 has 3 divisors (see below), whose sum is σ = 64973755101. Its totient is φ = 64973245302.

The previous prime is 64973500181. The next prime is 64973500213. The reversal of 64973500201 is 10200537946.

The square root of 64973500201 is 254899.

It is a perfect power (a square), and thus also a powerful number.

It is a semiprime because it is the product of two primes, and also a brilliant number, because the two primes have the same length.

It is not a de Polignac number, because 64973500201 - 2¹³ = 64973492009 is a prime.

It is a hoax number, since the sum of its digits (37) coincides with the sum of the digits of its distinct prime factors.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (64973500261) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 2 ways as a sum of consecutive naturals, for example, 127450 + ... + 382348.

It is an arithmetic number, because the mean of its divisors is an integer number (21657918367).

Almost surely, 2^64973500201 is an apocalyptic number.

64973500201 is the 254899-th square number.

64973500201 is the 127450-th centered octagonal number.

It is an amenable number.

64973500201 is a deficient number, since it is larger than the sum of its proper divisors (254900).

64973500201 is an frugal number, since it uses more digits than its factorization.

64973500201 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 509798 (or 254899 counting only the distinct ones).

The product of its (nonzero) digits is 45360, while the sum is 37.

The spelling of 64973500201 in words is "sixty-four billion, nine hundred seventy-three million, five hundred thousand, two hundred one".