64493173 has 4 divisors (see below), whose sum is σ = 67297248. Its totient is φ = 61689100.

The previous prime is 64493171. The next prime is 64493203. The reversal of 64493173 is 37139446.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is not a de Polignac number, because 64493173 - 2¹ = 64493171 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 (64493171) 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, 1402003 + ... + 1402048.

It is an arithmetic number, because the mean of its divisors is an integer number (16824312).

Almost surely, 2^64493173 is an apocalyptic number.

It is an amenable number.

64493173 is a deficient number, since it is larger than the sum of its proper divisors (2804075).

64493173 is a wasteful number, since it uses less digits than its factorization.

64493173 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2804074.

The product of its digits is 54432, while the sum is 37.

The square root of 64493173 is about 8030.7641604022. The cubic root of 64493173 is about 401.0248158887.

The spelling of 64493173 in words is "sixty-four million, four hundred ninety-three thousand, one hundred seventy-three".