64283421 has 4 divisors (see below), whose sum is σ = 85711232. Its totient is φ = 42855612.

The previous prime is 64283419. The next prime is 64283423. The reversal of 64283421 is 12438246.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is an interprime number because it is at equal distance from previous prime (64283419) and next prime (64283423).

It is not a de Polignac number, because 64283421 - 2¹ = 64283419 is a prime.

It is a Duffinian number.

It is a Curzon number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (64283423) 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, 10713901 + ... + 10713906.

It is an arithmetic number, because the mean of its divisors is an integer number (21427808).

Almost surely, 2^64283421 is an apocalyptic number.

It is an amenable number.

64283421 is a deficient number, since it is larger than the sum of its proper divisors (21427811).

64283421 is a wasteful number, since it uses less digits than its factorization.

64283421 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 21427810.

The product of its digits is 9216, while the sum is 30.

The square root of 64283421 is about 8017.6942446067. The cubic root of 64283421 is about 400.5895909460.

The spelling of 64283421 in words is "sixty-four million, two hundred eighty-three thousand, four hundred twenty-one".