64379447 has 4 divisors (see below), whose sum is σ = 70232136. Its totient is φ = 58526760.

The previous prime is 64379437. The next prime is 64379453. The reversal of 64379447 is 74497346.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is not a de Polignac number, because 64379447 - 2¹² = 64375351 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 64379398 and 64379407.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (64379407) 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, 2926328 + ... + 2926349.

It is an arithmetic number, because the mean of its divisors is an integer number (17558034).

Almost surely, 2^64379447 is an apocalyptic number.

64379447 is a deficient number, since it is larger than the sum of its proper divisors (5852689).

64379447 is a wasteful number, since it uses less digits than its factorization.

64379447 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 5852688.

The product of its digits is 508032, while the sum is 44.

The square root of 64379447 is about 8023.6803899458. The cubic root of 64379447 is about 400.7889574257.

The spelling of 64379447 in words is "sixty-four million, three hundred seventy-nine thousand, four hundred forty-seven".