64145433 has 16 divisors (see below), whose sum is σ = 93724416. Its totient is φ = 38700240.

The previous prime is 64145407. The next prime is 64145441. The reversal of 64145433 is 33454146.

It is not a de Polignac number, because 64145433 - 2¹⁷ = 64014361 is a prime.

It is a super-2 number, since 2×64145433² = 8229273149514978, which contains 22 as substring.

It is a self number, because there is not a number n which added to its sum of digits gives 64145433.

It is not an unprimeable number, because it can be changed into a prime (64145633) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 3210 + ... + 11772.

It is an arithmetic number, because the mean of its divisors is an integer number (5857776).

Almost surely, 2^64145433 is an apocalyptic number.

It is an amenable number.

64145433 is a deficient number, since it is larger than the sum of its proper divisors (29578983).

64145433 is a wasteful number, since it uses less digits than its factorization.

64145433 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 8804.

The product of its digits is 17280, while the sum is 30.

The square root of 64145433 is about 8009.0844045996. The cubic root of 64145433 is about 400.3027562056.

Adding to 64145433 its reverse (33454146), we get a palindrome (97599579).

The spelling of 64145433 in words is "sixty-four million, one hundred forty-five thousand, four hundred thirty-three".