64493105 has 4 divisors (see below), whose sum is σ = 77391732. Its totient is φ = 51594480.

The previous prime is 64493101. The next prime is 64493111. The reversal of 64493105 is 50139446.

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 32638369 + 31854736 = 5713^2 + 5644^2 .

It is not a de Polignac number, because 64493105 - 2² = 64493101 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (64493101) 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, 6449306 + ... + 6449315.

It is an arithmetic number, because the mean of its divisors is an integer number (19347933).

Almost surely, 2^64493105 is an apocalyptic number.

It is an amenable number.

64493105 is a deficient number, since it is larger than the sum of its proper divisors (12898627).

64493105 is a wasteful number, since it uses less digits than its factorization.

64493105 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 12898626.

The product of its (nonzero) digits is 12960, while the sum is 32.

The square root of 64493105 is about 8030.7599266819. The cubic root of 64493105 is about 401.0246749451.

The spelling of 64493105 in words is "sixty-four million, four hundred ninety-three thousand, one hundred five".