64136263 has 6 divisors (see below), whose sum is σ = 65664384. Its totient is φ = 62642916.

The previous prime is 64136251. The next prime is 64136269. The reversal of 64136263 is 36263146.

64136263 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is not a de Polignac number, because 64136263 - 2⁹ = 64135751 is a prime.

It is a super-2 number, since 2×64136263² = 8226920463210338, which contains 22 as substring.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (64136269) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 15495 + ... + 19192.

It is an arithmetic number, because the mean of its divisors is an integer number (10944064).

Almost surely, 2^64136263 is an apocalyptic number.

64136263 is a deficient number, since it is larger than the sum of its proper divisors (1528121).

64136263 is an equidigital number, since it uses as much as digits as its factorization.

64136263 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 34773 (or 34730 counting only the distinct ones).

The product of its digits is 15552, while the sum is 31.

The square root of 64136263 is about 8008.5119092126. The cubic root of 64136263 is about 400.2836800166.

The spelling of 64136263 in words is "sixty-four million, one hundred thirty-six thousand, two hundred sixty-three".