64801871 has 2 divisors, whose sum is σ = 64801872. Its totient is φ = 64801870.

The previous prime is 64801829. The next prime is 64801889. The reversal of 64801871 is 17810846.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 64801871 - 2¹⁰ = 64800847 is a prime.

It is equal to p_3829535 and since 64801871 and 3829535 have the same sum of digits, it is a Honaker prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (64806871) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 32400935 + 32400936.

It is an arithmetic number, because the mean of its divisors is an integer number (32400936).

Almost surely, 2^64801871 is an apocalyptic number.

64801871 is a deficient number, since it is larger than the sum of its proper divisors (1).

64801871 is an equidigital number, since it uses as much as digits as its factorization.

64801871 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 10752, while the sum is 35.

The square root of 64801871 is about 8049.9609315822. The cubic root of 64801871 is about 401.6636357808.

Subtracting from 64801871 its reverse (17810846), we obtain a square (46991025 = 6855²).

The spelling of 64801871 in words is "sixty-four million, eight hundred one thousand, eight hundred seventy-one".