64973201 has 4 divisors (see below), whose sum is σ = 68795172. Its totient is φ = 61151232.

The previous prime is 64973197. The next prime is 64973203. The reversal of 64973201 is 10237946.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in 2 ways, for example, as 59660176 + 5313025 = 7724^2 + 2305^2 .

It is a cyclic number.

It is not a de Polignac number, because 64973201 - 2² = 64973197 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (64973203) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 1910960 + ... + 1910993.

It is an arithmetic number, because the mean of its divisors is an integer number (17198793).

Almost surely, 2^64973201 is an apocalyptic number.

It is an amenable number.

64973201 is a deficient number, since it is larger than the sum of its proper divisors (3821971).

64973201 is a wasteful number, since it uses less digits than its factorization.

64973201 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3821970.

The product of its (nonzero) digits is 9072, while the sum is 32.

The square root of 64973201 is about 8060.5955735293. The cubic root of 64973201 is about 402.0173111197.

The spelling of 64973201 in words is "sixty-four million, nine hundred seventy-three thousand, two hundred one".