64156343 has 2 divisors, whose sum is σ = 64156344. Its totient is φ = 64156342.

The previous prime is 64156307. The next prime is 64156357. The reversal of 64156343 is 34365146.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 64156343 - 2⁸ = 64156087 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (64156943) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 32078171 + 32078172.

It is an arithmetic number, because the mean of its divisors is an integer number (32078172).

Almost surely, 2^64156343 is an apocalyptic number.

64156343 is a deficient number, since it is larger than the sum of its proper divisors (1).

64156343 is an equidigital number, since it uses as much as digits as its factorization.

64156343 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 25920, while the sum is 32.

The square root of 64156343 is about 8009.7654772159. The cubic root of 64156343 is about 400.3254497177.

The spelling of 64156343 in words is "sixty-four million, one hundred fifty-six thousand, three hundred forty-three".