64695193 has 4 divisors (see below), whose sum is σ = 64746000. Its totient is φ = 64644388.

The previous prime is 64695173. The next prime is 64695229. The reversal of 64695193 is 39159646.

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 64695193 - 2⁵ = 64695161 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (64695173) 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, 23443 + ... + 26056.

It is an arithmetic number, because the mean of its divisors is an integer number (16186500).

Almost surely, 2^64695193 is an apocalyptic number.

It is an amenable number.

64695193 is a deficient number, since it is larger than the sum of its proper divisors (50807).

64695193 is a wasteful number, since it uses less digits than its factorization.

64695193 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 50806.

The product of its digits is 174960, while the sum is 43.

The square root of 64695193 is about 8043.3322074871. The cubic root of 64695193 is about 401.4431061008.

The spelling of 64695193 in words is "sixty-four million, six hundred ninety-five thousand, one hundred ninety-three".