64463420 has 48 divisors (see below), whose sum is σ = 157886400. Its totient is φ = 22099392.

The previous prime is 64463419. The next prime is 64463431. The reversal of 64463420 is 2436446.

It is a happy number.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 2162 + ... + 11558.

It is an arithmetic number, because the mean of its divisors is an integer number (3289300).

Almost surely, 2^64463420 is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 64463420, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (78943200).

64463420 is an abundant number, since it is smaller than the sum of its proper divisors (93422980).

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

64463420 is a wasteful number, since it uses less digits than its factorization.

64463420 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 9427 (or 9411 counting only the distinct ones).

The product of its (nonzero) digits is 13824, while the sum is 29.

The square root of 64463420 is about 8028.9115077948. The cubic root of 64463420 is about 400.9631373879.

Adding to 64463420 its reverse (2436446), we get a palindrome (66899866).

The spelling of 64463420 in words is "sixty-four million, four hundred sixty-three thousand, four hundred twenty".