64854637 has 2 divisors, whose sum is σ = 64854638. Its totient is φ = 64854636.

The previous prime is 64854607. The next prime is 64854649. The reversal of 64854637 is 73645846.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 60668521 + 4186116 = 7789^2 + 2046^2 .

It is a cyclic number.

It is not a de Polignac number, because 64854637 - 2²³ = 56466029 is a prime.

It is a super-2 number, since 2×64854637² = 8412247880803538, which contains 22 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 64854593 and 64854602.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (64854607) 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, 32427318 + 32427319.

It is an arithmetic number, because the mean of its divisors is an integer number (32427319).

Almost surely, 2^64854637 is an apocalyptic number.

It is an amenable number.

64854637 is a deficient number, since it is larger than the sum of its proper divisors (1).

64854637 is an equidigital number, since it uses as much as digits as its factorization.

64854637 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 483840, while the sum is 43.

The square root of 64854637 is about 8053.2376718932. The cubic root of 64854637 is about 401.7726266330.

The spelling of 64854637 in words is "sixty-four million, eight hundred fifty-four thousand, six hundred thirty-seven".