64121446 has 4 divisors (see below), whose sum is σ = 96182172. Its totient is φ = 32060722.

The previous prime is 64121443. The next prime is 64121459. The reversal of 64121446 is 64412146.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 64412146 = 2 ⋅32206073.

It is a super-2 number, since 2×64121446² = 8223119674261832, which contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (64121441) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 16030360 + ... + 16030363.

It is an arithmetic number, because the mean of its divisors is an integer number (24045543).

Almost surely, 2^64121446 is an apocalyptic number.

64121446 is a deficient number, since it is larger than the sum of its proper divisors (32060726).

64121446 is a wasteful number, since it uses less digits than its factorization.

64121446 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 32060725.

The product of its digits is 4608, while the sum is 28.

The square root of 64121446 is about 8007.5867775504. The cubic root of 64121446 is about 400.2528526302.

The spelling of 64121446 in words is "sixty-four million, one hundred twenty-one thousand, four hundred forty-six".