64146433 has 4 divisors (see below), whose sum is σ = 69080788. Its totient is φ = 59212080.

The previous prime is 64146431. The next prime is 64146469. The reversal of 64146433 is 33464146.

It is a happy number.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in 2 ways, for example, as 19430464 + 44715969 = 4408^2 + 6687^2 .

It is a cyclic number.

It is not a de Polignac number, because 64146433 - 2¹ = 64146431 is a prime.

It is a super-2 number, since 2×64146433² = 8229529733246978, which contains 22 as substring.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 64146395 and 64146404.

It is not an unprimeable number, because it can be changed into a prime (64146431) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 2467158 + ... + 2467183.

It is an arithmetic number, because the mean of its divisors is an integer number (17270197).

Almost surely, 2^64146433 is an apocalyptic number.

It is an amenable number.

64146433 is a deficient number, since it is larger than the sum of its proper divisors (4934355).

64146433 is a wasteful number, since it uses less digits than its factorization.

64146433 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 4934354.

The product of its digits is 20736, while the sum is 31.

The square root of 64146433 is about 8009.1468334648. The cubic root of 64146433 is about 400.3048363779.

It can be divided in two parts, 641 and 46433, that added together give a palindrome (47074).

The spelling of 64146433 in words is "sixty-four million, one hundred forty-six thousand, four hundred thirty-three".