64758493 has 2 divisors, whose sum is σ = 64758494. Its totient is φ = 64758492.

The previous prime is 64758467. The next prime is 64758503. The reversal of 64758493 is 39485746.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 64689849 + 68644 = 8043^2 + 262^2 .

It is a cyclic number.

It is not a de Polignac number, because 64758493 - 2²¹ = 62661341 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (64758413) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 32379246 + 32379247.

It is an arithmetic number, because the mean of its divisors is an integer number (32379247).

Almost surely, 2^64758493 is an apocalyptic number.

It is an amenable number.

64758493 is a deficient number, since it is larger than the sum of its proper divisors (1).

64758493 is an equidigital number, since it uses as much as digits as its factorization.

64758493 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 725760, while the sum is 46.

The square root of 64758493 is about 8047.2661817539. The cubic root of 64758493 is about 401.5739919990.

The spelling of 64758493 in words is "sixty-four million, seven hundred fifty-eight thousand, four hundred ninety-three".