64148333 has 4 divisors (see below), whose sum is σ = 64171068. Its totient is φ = 64125600.

The previous prime is 64148309. The next prime is 64148339. The reversal of 64148333 is 33384146.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 33384146 = 2 ⋅16692073.

It can be written as a sum of positive squares in 2 ways, for example, as 8988004 + 55160329 = 2998^2 + 7427^2 .

It is a cyclic number.

It is not a de Polignac number, because 64148333 - 2²⁴ = 47371117 is a prime.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 64148333.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (64148339) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 6416 + ... + 13017.

It is an arithmetic number, because the mean of its divisors is an integer number (16042767).

Almost surely, 2^64148333 is an apocalyptic number.

It is an amenable number.

64148333 is a deficient number, since it is larger than the sum of its proper divisors (22735).

64148333 is a wasteful number, since it uses less digits than its factorization.

64148333 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 22734.

The product of its digits is 20736, while the sum is 32.

The square root of 64148333 is about 8009.2654469683. The cubic root of 64148333 is about 400.3087886459.

The spelling of 64148333 in words is "sixty-four million, one hundred forty-eight thousand, three hundred thirty-three".