64999093 has 4 divisors (see below), whose sum is σ = 65016748. Its totient is φ = 64981440.

The previous prime is 64999087. The next prime is 64999111. The reversal of 64999093 is 39099946.

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 62758084 + 2241009 = 7922^2 + 1497^2 .

It is a cyclic number.

It is not a de Polignac number, because 64999093 - 2⁹ = 64998581 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 (64999393) 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 3 ways as a sum of consecutive naturals, for example, 978 + ... + 11443.

It is an arithmetic number, because the mean of its divisors is an integer number (16254187).

Almost surely, 2^64999093 is an apocalyptic number.

It is an amenable number.

64999093 is a deficient number, since it is larger than the sum of its proper divisors (17655).

64999093 is a wasteful number, since it uses less digits than its factorization.

64999093 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 17654.

The product of its (nonzero) digits is 472392, while the sum is 49.

The square root of 64999093 is about 8062.2014983502. The cubic root of 64999093 is about 402.0707056973.

The spelling of 64999093 in words is "sixty-four million, nine hundred ninety-nine thousand, ninety-three".