64873597 has 2 divisors, whose sum is σ = 64873598. Its totient is φ = 64873596.

The previous prime is 64873579. The next prime is 64873637. The reversal of 64873597 is 79537846.

It is a happy number.

Together with previous prime (64873579) it forms an Ormiston pair, because they use the same digits, order apart.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 47183161 + 17690436 = 6869^2 + 4206^2 .

It is a cyclic number.

It is not a de Polignac number, because 64873597 - 2¹⁵ = 64840829 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 64873597.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (64873507) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 32436798 + 32436799.

It is an arithmetic number, because the mean of its divisors is an integer number (32436799).

Almost surely, 2^64873597 is an apocalyptic number.

It is an amenable number.

64873597 is a deficient number, since it is larger than the sum of its proper divisors (1).

64873597 is an equidigital number, since it uses as much as digits as its factorization.

64873597 is an evil number, because the sum of its binary digits is even.

The product of its digits is 1270080, while the sum is 49.

The square root of 64873597 is about 8054.4147521716. The cubic root of 64873597 is about 401.8117750380.

The spelling of 64873597 in words is "sixty-four million, eight hundred seventy-three thousand, five hundred ninety-seven".