64500823 has 2 divisors, whose sum is σ = 64500824. Its totient is φ = 64500822.

The previous prime is 64500811. The next prime is 64500847. The reversal of 64500823 is 32800546.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 64500823 - 2⁵ = 64500791 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 64500791 and 64500800.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (64500803) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 32250411 + 32250412.

It is an arithmetic number, because the mean of its divisors is an integer number (32250412).

Almost surely, 2^64500823 is an apocalyptic number.

64500823 is a deficient number, since it is larger than the sum of its proper divisors (1).

64500823 is an equidigital number, since it uses as much as digits as its factorization.

64500823 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 5760, while the sum is 28.

The square root of 64500823 is about 8031.2404396830. The cubic root of 64500823 is about 401.0406714095.

The spelling of 64500823 in words is "sixty-four million, five hundred thousand, eight hundred twenty-three".