64682421 has 8 divisors (see below), whose sum is σ = 86280384. Its totient is φ = 43103040.

The previous prime is 64682407. The next prime is 64682447. The reversal of 64682421 is 12428646.

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

It is not a de Polignac number, because 64682421 - 2⁶ = 64682357 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (64682921) 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, 11341 + ... + 16061.

It is an arithmetic number, because the mean of its divisors is an integer number (10785048).

Almost surely, 2^64682421 is an apocalyptic number.

It is an amenable number.

64682421 is a deficient number, since it is larger than the sum of its proper divisors (21597963).

64682421 is a wasteful number, since it uses less digits than its factorization.

64682421 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 9291.

The product of its digits is 18432, while the sum is 33.

The square root of 64682421 is about 8042.5382187466. The cubic root of 64682421 is about 401.4166869881.

The spelling of 64682421 in words is "sixty-four million, six hundred eighty-two thousand, four hundred twenty-one".