67528865 has 4 divisors (see below), whose sum is σ = 81034644. Its totient is φ = 54023088.

The previous prime is 67528823. The next prime is 67528873. The reversal of 67528865 is 56882576.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in 2 ways, for example, as 31899904 + 35628961 = 5648^2 + 5969^2 .

It is a cyclic number.

It is not a de Polignac number, because 67528865 - 2⁸ = 67528609 is a prime.

It is a Duffinian number.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 6752882 + ... + 6752891.

It is an arithmetic number, because the mean of its divisors is an integer number (20258661).

Almost surely, 2^67528865 is an apocalyptic number.

It is an amenable number.

67528865 is a deficient number, since it is larger than the sum of its proper divisors (13505779).

67528865 is a wasteful number, since it uses less digits than its factorization.

67528865 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 13505778.

The product of its digits is 806400, while the sum is 47.

The square root of 67528865 is about 8217.5948427749. The cubic root of 67528865 is about 407.2206724882.

The spelling of 67528865 in words is "sixty-seven million, five hundred twenty-eight thousand, eight hundred sixty-five".