64278871 has 2 divisors, whose sum is σ = 64278872. Its totient is φ = 64278870.

The previous prime is 64278793. The next prime is 64278889. The reversal of 64278871 is 17887246.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 64278871 - 2¹⁷ = 64147799 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (64278971) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 32139435 + 32139436.

It is an arithmetic number, because the mean of its divisors is an integer number (32139436).

Almost surely, 2^64278871 is an apocalyptic number.

64278871 is a deficient number, since it is larger than the sum of its proper divisors (1).

64278871 is an equidigital number, since it uses as much as digits as its factorization.

64278871 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 150528, while the sum is 43.

The square root of 64278871 is about 8017.4104921726. The cubic root of 64278871 is about 400.5801394388.

The spelling of 64278871 in words is "sixty-four million, two hundred seventy-eight thousand, eight hundred seventy-one".