64870733 has 8 divisors (see below), whose sum is σ = 66943800. Its totient is φ = 62821120.

The previous prime is 64870727. The next prime is 64870747. The reversal of 64870733 is 33707846.

It can be written as a sum of positive squares in 4 ways, for example, as 12482089 + 52388644 = 3533^2 + 7238^2 .

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 64870733 - 2⁴ = 64870717 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (64870723) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 158 + ... + 11391.

It is an arithmetic number, because the mean of its divisors is an integer number (8367975).

Almost surely, 2^64870733 is an apocalyptic number.

It is an amenable number.

64870733 is a deficient number, since it is larger than the sum of its proper divisors (2073067).

64870733 is a wasteful number, since it uses less digits than its factorization.

64870733 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 11727.

The product of its (nonzero) digits is 84672, while the sum is 38.

The square root of 64870733 is about 8054.2369595139. The cubic root of 64870733 is about 401.8058619706.

The spelling of 64870733 in words is "sixty-four million, eight hundred seventy thousand, seven hundred thirty-three".