64463421 has 8 divisors (see below), whose sum is σ = 93765024. Its totient is φ = 39068720.

The previous prime is 64463419. The next prime is 64463431. The reversal of 64463421 is 12436446.

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

It is a cyclic number.

It is not a de Polignac number, because 64463421 - 2¹ = 64463419 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (64463431) 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, 976686 + ... + 976751.

It is an arithmetic number, because the mean of its divisors is an integer number (11720628).

Almost surely, 2^64463421 is an apocalyptic number.

It is an amenable number.

64463421 is a deficient number, since it is larger than the sum of its proper divisors (29301603).

64463421 is a wasteful number, since it uses less digits than its factorization.

64463421 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1953451.

The product of its digits is 13824, while the sum is 30.

The square root of 64463421 is about 8028.9115700698. The cubic root of 64463421 is about 400.9631394613.

Adding to 64463421 its reverse (12436446), we get a palindrome (76899867).

The spelling of 64463421 in words is "sixty-four million, four hundred sixty-three thousand, four hundred twenty-one".