64946279 has 2 divisors, whose sum is σ = 64946280. Its totient is φ = 64946278.

The previous prime is 64946243. The next prime is 64946291. The reversal of 64946279 is 97264946.

It is a happy number.

It is a strong prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-64946279 is a prime.

It is a Chen prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (64946179) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 32473139 + 32473140.

It is an arithmetic number, because the mean of its divisors is an integer number (32473140).

Almost surely, 2^64946279 is an apocalyptic number.

64946279 is a deficient number, since it is larger than the sum of its proper divisors (1).

64946279 is an equidigital number, since it uses as much as digits as its factorization.

64946279 is an evil number, because the sum of its binary digits is even.

The product of its digits is 653184, while the sum is 47.

The square root of 64946279 is about 8058.9254246456. The cubic root of 64946279 is about 401.9617774274.

The spelling of 64946279 in words is "sixty-four million, nine hundred forty-six thousand, two hundred seventy-nine".