64433000 has 32 divisors (see below), whose sum is σ = 150775560. Its totient is φ = 25772800.

The previous prime is 64432999. The next prime is 64433011. The reversal of 64433000 is 33446.

It is a happy number.

It can be written as a sum of positive squares in 4 ways, for example, as 17455684 + 46977316 = 4178^2 + 6854^2 .

It is a super-2 number, since 2×64433000² = 8303222978000000, which contains 22 as substring.

It is a Harshad number since it is a multiple of its sum of digits (20).

It is a nialpdrome in base 10.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 31217 + ... + 33216.

Almost surely, 2^64433000 is an apocalyptic number.

It is an amenable number.

64433000 is an abundant number, since it is smaller than the sum of its proper divisors (86342560).

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

64433000 is a wasteful number, since it uses less digits than its factorization.

64433000 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 64454 (or 64440 counting only the distinct ones).

The product of its (nonzero) digits is 864, while the sum is 20.

The square root of 64433000 is about 8027.0168805105. The cubic root of 64433000 is about 400.9000565598.

Adding to 64433000 its reverse (33446), we get a palindrome (64466446).

The spelling of 64433000 in words is "sixty-four million, four hundred thirty-three thousand".