64140163 has 2 divisors, whose sum is σ = 64140164. Its totient is φ = 64140162.

The previous prime is 64140157. The next prime is 64140173. The reversal of 64140163 is 36104146.

It is a weak prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-64140163 is a prime.

It is a super-2 number, since 2×64140163² = 8227921019333138, which contains 22 as substring.

It is not a weakly prime, because it can be changed into another prime (64140103) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 32070081 + 32070082.

It is an arithmetic number, because the mean of its divisors is an integer number (32070082).

Almost surely, 2^64140163 is an apocalyptic number.

64140163 is a deficient number, since it is larger than the sum of its proper divisors (1).

64140163 is an equidigital number, since it uses as much as digits as its factorization.

64140163 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 1728, while the sum is 25.

The square root of 64140163 is about 8008.7553964396. The cubic root of 64140163 is about 400.2917933399.

It can be divided in two parts, 641 and 40163, that added together give a palindrome (40804).

The spelling of 64140163 in words is "sixty-four million, one hundred forty thousand, one hundred sixty-three".