64021446 has 12 divisors (see below), whose sum is σ = 138713172. Its totient is φ = 21340476.

The previous prime is 64021423. The next prime is 64021457. The reversal of 64021446 is 64412046.

64021446 is a `hidden beast` number, since 640 + 2 + 14 + 4 + 6 = 666.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 1778356 + ... + 1778391.

It is an arithmetic number, because the mean of its divisors is an integer number (11559431).

Almost surely, 2^64021446 is an apocalyptic number.

64021446 is an abundant number, since it is smaller than the sum of its proper divisors (74691726).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

64021446 is a wasteful number, since it uses less digits than its factorization.

64021446 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3556755 (or 3556752 counting only the distinct ones).

The product of its (nonzero) digits is 4608, while the sum is 27.

The square root of 64021446 is about 8001.3402627310. The cubic root of 64021446 is about 400.0446741770.

The spelling of 64021446 in words is "sixty-four million, twenty-one thousand, four hundred forty-six".