64273117 has 4 divisors (see below), whose sum is σ = 65840796. Its totient is φ = 62705440.

The previous prime is 64273103. The next prime is 64273127. The reversal of 64273117 is 71137246.

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 30702681 + 33570436 = 5541^2 + 5794^2 .

It is a cyclic number.

It is not a de Polignac number, because 64273117 - 2¹¹ = 64271069 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 (64273127) 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 3 ways as a sum of consecutive naturals, for example, 783778 + ... + 783859.

It is an arithmetic number, because the mean of its divisors is an integer number (16460199).

Almost surely, 2^64273117 is an apocalyptic number.

It is an amenable number.

64273117 is a deficient number, since it is larger than the sum of its proper divisors (1567679).

64273117 is a wasteful number, since it uses less digits than its factorization.

64273117 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1567678.

The product of its digits is 7056, while the sum is 31.

The square root of 64273117 is about 8017.0516400981. The cubic root of 64273117 is about 400.5681862787.

The spelling of 64273117 in words is "sixty-four million, two hundred seventy-three thousand, one hundred seventeen".