64546231 has 2 divisors, whose sum is σ = 64546232. Its totient is φ = 64546230.

The previous prime is 64546219. The next prime is 64546253. The reversal of 64546231 is 13264546.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 64546231 - 2¹³ = 64538039 is a prime.

It is a super-2 number, since 2×64546231² = 8332431872610722, which contains 22 as substring.

It is a Chen prime.

It is equal to p_3815464 and since 64546231 and 3815464 have the same sum of digits, it is a Honaker prime.

It is a junction number, because it is equal to n+sod(n) for n = 64546193 and 64546202.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (64546201) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 32273115 + 32273116.

It is an arithmetic number, because the mean of its divisors is an integer number (32273116).

Almost surely, 2^64546231 is an apocalyptic number.

64546231 is a deficient number, since it is larger than the sum of its proper divisors (1).

64546231 is an equidigital number, since it uses as much as digits as its factorization.

64546231 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 17280, while the sum is 31.

The square root of 64546231 is about 8034.0669028830. The cubic root of 64546231 is about 401.1347590108.

The spelling of 64546231 in words is "sixty-four million, five hundred forty-six thousand, two hundred thirty-one".