64743953 has 2 divisors, whose sum is σ = 64743954. Its totient is φ = 64743952.

The previous prime is 64743949. The next prime is 64743983. The reversal of 64743953 is 35934746.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 60949249 + 3794704 = 7807^2 + 1948^2 .

It is a cyclic number.

It is not a de Polignac number, because 64743953 - 2² = 64743949 is a prime.

It is a Chen prime.

It is a self number, because there is not a number n which added to its sum of digits gives 64743953.

It is not a weakly prime, because it can be changed into another prime (64743923) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 32371976 + 32371977.

It is an arithmetic number, because the mean of its divisors is an integer number (32371977).

Almost surely, 2^64743953 is an apocalyptic number.

It is an amenable number.

64743953 is a deficient number, since it is larger than the sum of its proper divisors (1).

64743953 is an equidigital number, since it uses as much as digits as its factorization.

64743953 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 272160, while the sum is 41.

The square root of 64743953 is about 8046.3627186450. The cubic root of 64743953 is about 401.5439350772.

The spelling of 64743953 in words is "sixty-four million, seven hundred forty-three thousand, nine hundred fifty-three".