64091143 has 2 divisors, whose sum is σ = 64091144. Its totient is φ = 64091142.

The previous prime is 64091119. The next prime is 64091147. The reversal of 64091143 is 34119046.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 64091143 - 2¹³ = 64082951 is a prime.

It is a super-2 number, since 2×64091143² = 8215349222092898, which contains 22 as substring.

It is equal to p_3790153 and since 64091143 and 3790153 have the same sum of digits, it is a Honaker prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (64091147) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 32045571 + 32045572.

It is an arithmetic number, because the mean of its divisors is an integer number (32045572).

Almost surely, 2^64091143 is an apocalyptic number.

64091143 is a deficient number, since it is larger than the sum of its proper divisors (1).

64091143 is an equidigital number, since it uses as much as digits as its factorization.

64091143 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 2592, while the sum is 28.

The square root of 64091143 is about 8005.6944108553. The cubic root of 64091143 is about 400.1897911840.

The spelling of 64091143 in words is "sixty-four million, ninety-one thousand, one hundred forty-three".