64034447 has 4 divisors (see below), whose sum is σ = 64112520. Its totient is φ = 63956376.

The previous prime is 64034431. The next prime is 64034449. The reversal of 64034447 is 74443046.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 74443046 = 2 ⋅37221523.

It is a cyclic number.

It is not a de Polignac number, because 64034447 - 2⁴ = 64034431 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 (64034449) 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, 37793 + ... + 39450.

It is an arithmetic number, because the mean of its divisors is an integer number (16028130).

Almost surely, 2^64034447 is an apocalyptic number.

64034447 is a deficient number, since it is larger than the sum of its proper divisors (78073).

64034447 is an equidigital number, since it uses as much as digits as its factorization.

64034447 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 78072.

The product of its (nonzero) digits is 32256, while the sum is 32.

The square root of 64034447 is about 8002.1526478817. The cubic root of 64034447 is about 400.0717517118.

The spelling of 64034447 in words is "sixty-four million, thirty-four thousand, four hundred forty-seven".