64194447 has 8 divisors (see below), whose sum is σ = 85948720. Its totient is φ = 42618240.

The previous prime is 64194421. The next prime is 64194451. The reversal of 64194447 is 74449146.

It is a sphenic number, since it is the product of 3 distinct primes.

It is not a de Polignac number, because 64194447 - 2⁸ = 64194191 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 (64194467) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 43672 + ... + 45117.

It is an arithmetic number, because the mean of its divisors is an integer number (10743590).

Almost surely, 2^64194447 is an apocalyptic number.

64194447 is a deficient number, since it is larger than the sum of its proper divisors (21754273).

64194447 is a wasteful number, since it uses less digits than its factorization.

64194447 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 89033.

The product of its digits is 96768, while the sum is 39.

The square root of 64194447 is about 8012.1437206281. The cubic root of 64194447 is about 400.4046883469.

The spelling of 64194447 in words is "sixty-four million, one hundred ninety-four thousand, four hundred forty-seven".