64947383 has 2 divisors, whose sum is σ = 64947384. Its totient is φ = 64947382.

The previous prime is 64947353. The next prime is 64947391. The reversal of 64947383 is 38374946.

It is a happy number.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 64947383 - 2²² = 60753079 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (64947353) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 32473691 + 32473692.

It is an arithmetic number, because the mean of its divisors is an integer number (32473692).

Almost surely, 2^64947383 is an apocalyptic number.

64947383 is a deficient number, since it is larger than the sum of its proper divisors (1).

64947383 is an equidigital number, since it uses as much as digits as its factorization.

64947383 is an evil number, because the sum of its binary digits is even.

The product of its digits is 435456, while the sum is 44.

The square root of 64947383 is about 8058.9939198389. The cubic root of 64947383 is about 401.9640550189.

The spelling of 64947383 in words is "sixty-four million, nine hundred forty-seven thousand, three hundred eighty-three".