64942273 has 12 divisors (see below), whose sum is σ = 71577940. Its totient is φ = 58877280.

The previous prime is 64942211. The next prime is 64942279. The reversal of 64942273 is 37224946.

It can be written as a sum of positive squares in 2 ways, for example, as 23107249 + 41835024 = 4807^2 + 6468^2 .

It is not a de Polignac number, because 64942273 - 2⁹ = 64941761 is a prime.

It is a hoax number, since the sum of its digits (37) coincides with the sum of the digits of its distinct prime factors.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (64942279) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 85411 + ... + 86167.

Almost surely, 2^64942273 is an apocalyptic number.

It is an amenable number.

64942273 is a deficient number, since it is larger than the sum of its proper divisors (6635667).

64942273 is a wasteful number, since it uses less digits than its factorization.

64942273 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1488 (or 1477 counting only the distinct ones).

The product of its digits is 72576, while the sum is 37.

The square root of 64942273 is about 8058.6768765102. The cubic root of 64942273 is about 401.9535126891.

The spelling of 64942273 in words is "sixty-four million, nine hundred forty-two thousand, two hundred seventy-three".