64197743 has 2 divisors, whose sum is σ = 64197744. Its totient is φ = 64197742.

The previous prime is 64197739. The next prime is 64197767. The reversal of 64197743 is 34779146.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 64197743 - 2² = 64197739 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 64197743.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (64197773) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 32098871 + 32098872.

It is an arithmetic number, because the mean of its divisors is an integer number (32098872).

Almost surely, 2^64197743 is an apocalyptic number.

64197743 is a deficient number, since it is larger than the sum of its proper divisors (1).

64197743 is an equidigital number, since it uses as much as digits as its factorization.

64197743 is an evil number, because the sum of its binary digits is even.

The product of its digits is 127008, while the sum is 41.

The square root of 64197743 is about 8012.3494057611. The cubic root of 64197743 is about 400.4115410231.

The spelling of 64197743 in words is "sixty-four million, one hundred ninety-seven thousand, seven hundred forty-three".