64798693 has 4 divisors (see below), whose sum is σ = 64858860. Its totient is φ = 64738528.

The previous prime is 64798687. The next prime is 64798717. The reversal of 64798693 is 39689746.

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 33907329 + 30891364 = 5823^2 + 5558^2 .

It is a cyclic number.

It is not a de Polignac number, because 64798693 - 2⁵ = 64798661 is a prime.

It is a super-2 number, since 2×64798693² = 8397741229016498, which contains 22 as substring.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 64798693.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (64798633) 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, 28438 + ... + 30631.

It is an arithmetic number, because the mean of its divisors is an integer number (16214715).

Almost surely, 2^64798693 is an apocalyptic number.

It is an amenable number.

64798693 is a deficient number, since it is larger than the sum of its proper divisors (60167).

64798693 is a wasteful number, since it uses less digits than its factorization.

64798693 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 60166.

The product of its digits is 1959552, while the sum is 52.

The square root of 64798693 is about 8049.7635368997. The cubic root of 64798693 is about 401.6570695717.

The spelling of 64798693 in words is "sixty-four million, seven hundred ninety-eight thousand, six hundred ninety-three".