67564625 has 8 divisors (see below), whose sum is σ = 84320808. Its totient is φ = 54051600.

The previous prime is 67564619. The next prime is 67564633. The reversal of 67564625 is 52646576.

It can be written as a sum of positive squares in 4 ways, for example, as 6599761 + 60964864 = 2569^2 + 7808^2 .

It is not a de Polignac number, because 67564625 - 2⁸ = 67564369 is a prime.

It is a Duffinian number.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 270134 + ... + 270383.

It is an arithmetic number, because the mean of its divisors is an integer number (10540101).

Almost surely, 2^67564625 is an apocalyptic number.

It is an amenable number.

67564625 is a deficient number, since it is larger than the sum of its proper divisors (16756183).

67564625 is an equidigital number, since it uses as much as digits as its factorization.

67564625 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 540532 (or 540522 counting only the distinct ones).

The product of its digits is 302400, while the sum is 41.

The square root of 67564625 is about 8219.7703739216. The cubic root of 67564625 is about 407.2925412194.

The spelling of 67564625 in words is "sixty-seven million, five hundred sixty-four thousand, six hundred twenty-five".