64406193 has 4 divisors (see below), whose sum is σ = 85874928. Its totient is φ = 42937460.

The previous prime is 64406161. The next prime is 64406197. The reversal of 64406193 is 39160446.

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 64406193 - 2⁵ = 64406161 is a prime.

It is not an unprimeable number, because it can be changed into a prime (64406197) 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, 10734363 + ... + 10734368.

It is an arithmetic number, because the mean of its divisors is an integer number (21468732).

Almost surely, 2^64406193 is an apocalyptic number.

It is an amenable number.

64406193 is a deficient number, since it is larger than the sum of its proper divisors (21468735).

64406193 is a wasteful number, since it uses less digits than its factorization.

64406193 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 21468734.

The product of its (nonzero) digits is 15552, while the sum is 33.

The square root of 64406193 is about 8025.3469083897. The cubic root of 64406193 is about 400.8444514166.

The spelling of 64406193 in words is "sixty-four million, four hundred six thousand, one hundred ninety-three".