64942133 has 8 divisors (see below), whose sum is σ = 71332800. Its totient is φ = 58848768.

The previous prime is 64942099. The next prime is 64942147. The reversal of 64942133 is 33124946.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-64942133 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 64942133.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (64942153) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 73868 + ... + 74741.

It is an arithmetic number, because the mean of its divisors is an integer number (8916600).

Almost surely, 2^64942133 is an apocalyptic number.

It is an amenable number.

64942133 is a deficient number, since it is larger than the sum of its proper divisors (6390667).

64942133 is a wasteful number, since it uses less digits than its factorization.

64942133 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 148651.

The product of its digits is 15552, while the sum is 32.

The square root of 64942133 is about 8058.6681902160. The cubic root of 64942133 is about 401.9532238504.

The spelling of 64942133 in words is "sixty-four million, nine hundred forty-two thousand, one hundred thirty-three".