64745333 has 4 divisors (see below), whose sum is σ = 68553900. Its totient is φ = 60936768.

The previous prime is 64745323. The next prime is 64745353. The reversal of 64745333 is 33354746.

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 31832164 + 32913169 = 5642^2 + 5737^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-64745333 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 64745293 and 64745302.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (64745323) 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, 1904258 + ... + 1904291.

It is an arithmetic number, because the mean of its divisors is an integer number (17138475).

Almost surely, 2^64745333 is an apocalyptic number.

It is an amenable number.

64745333 is a deficient number, since it is larger than the sum of its proper divisors (3808567).

64745333 is a wasteful number, since it uses less digits than its factorization.

64745333 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3808566.

The product of its digits is 90720, while the sum is 35.

The square root of 64745333 is about 8046.4484712201. The cubic root of 64745333 is about 401.5467879907.

The spelling of 64745333 in words is "sixty-four million, seven hundred forty-five thousand, three hundred thirty-three".