64336273 has 8 divisors (see below), whose sum is σ = 65518376. Its totient is φ = 63158400.

The previous prime is 64336243. The next prime is 64336277. The reversal of 64336273 is 37263346.

It can be written as a sum of positive squares in 4 ways, for example, as 11235904 + 53100369 = 3352^2 + 7287^2 .

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 64336273 - 2⁵ = 64336241 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (64336277) 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, 61765 + ... + 62797.

It is an arithmetic number, because the mean of its divisors is an integer number (8189797).

Almost surely, 2^64336273 is an apocalyptic number.

It is an amenable number.

64336273 is a deficient number, since it is larger than the sum of its proper divisors (1182103).

64336273 is a wasteful number, since it uses less digits than its factorization.

64336273 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2115.

The product of its digits is 54432, while the sum is 34.

The square root of 64336273 is about 8020.9895274835. The cubic root of 64336273 is about 400.6993453277.

The spelling of 64336273 in words is "sixty-four million, three hundred thirty-six thousand, two hundred seventy-three".