64864783 has 2 divisors, whose sum is σ = 64864784. Its totient is φ = 64864782.

The previous prime is 64864763. The next prime is 64864799. The reversal of 64864783 is 38746846.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 64864783 - 2²¹ = 62767631 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (64864753) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 32432391 + 32432392.

It is an arithmetic number, because the mean of its divisors is an integer number (32432392).

Almost surely, 2^64864783 is an apocalyptic number.

64864783 is a deficient number, since it is larger than the sum of its proper divisors (1).

64864783 is an equidigital number, since it uses as much as digits as its factorization.

64864783 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 774144, while the sum is 46.

The square root of 64864783 is about 8053.8675802375. The cubic root of 64864783 is about 401.7935769341.

The spelling of 64864783 in words is "sixty-four million, eight hundred sixty-four thousand, seven hundred eighty-three".