64904263 has 2 divisors, whose sum is σ = 64904264. Its totient is φ = 64904262.

The previous prime is 64904221. The next prime is 64904293. The reversal of 64904263 is 36240946.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 64904263 - 2²¹ = 62807111 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (64904293) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 32452131 + 32452132.

It is an arithmetic number, because the mean of its divisors is an integer number (32452132).

Almost surely, 2^64904263 is an apocalyptic number.

64904263 is a deficient number, since it is larger than the sum of its proper divisors (1).

64904263 is an equidigital number, since it uses as much as digits as its factorization.

64904263 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 31104, while the sum is 34.

The square root of 64904263 is about 8056.3182037454. The cubic root of 64904263 is about 401.8750777242.

The spelling of 64904263 in words is "sixty-four million, nine hundred four thousand, two hundred sixty-three".