64262689 has 2 divisors, whose sum is σ = 64262690. Its totient is φ = 64262688.

The previous prime is 64262651. The next prime is 64262699. The reversal of 64262689 is 98626246.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 63872064 + 390625 = 7992^2 + 625^2 .

It is a cyclic number.

It is not a de Polignac number, because 64262689 - 2²³ = 55874081 is a prime.

It is equal to p_3799672 and since 64262689 and 3799672 have the same sum of digits, it is a Honaker prime.

It is not a weakly prime, because it can be changed into another prime (64262609) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 32131344 + 32131345.

It is an arithmetic number, because the mean of its divisors is an integer number (32131345).

Almost surely, 2^64262689 is an apocalyptic number.

It is an amenable number.

64262689 is a deficient number, since it is larger than the sum of its proper divisors (1).

64262689 is an equidigital number, since it uses as much as digits as its factorization.

64262689 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 248832, while the sum is 43.

The square root of 64262689 is about 8016.4012499375. The cubic root of 64262689 is about 400.5465216950.

The spelling of 64262689 in words is "sixty-four million, two hundred sixty-two thousand, six hundred eighty-nine".