67528969 has 4 divisors (see below), whose sum is σ = 67591296. Its totient is φ = 67466644.

The previous prime is 67528957. The next prime is 67528987. The reversal of 67528969 is 96982576.

It is a happy number.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is not a de Polignac number, because 67528969 - 2⁹ = 67528457 is a prime.

It is a super-2 number, since 2×67528969² = 9120323308405922, which contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (67528939) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 29509 + ... + 31714.

It is an arithmetic number, because the mean of its divisors is an integer number (16897824).

Almost surely, 2^67528969 is an apocalyptic number.

It is an amenable number.

67528969 is a deficient number, since it is larger than the sum of its proper divisors (62327).

67528969 is a wasteful number, since it uses less digits than its factorization.

67528969 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 62326.

The product of its digits is 1632960, while the sum is 52.

The square root of 67528969 is about 8217.6011706580. The cubic root of 67528969 is about 407.2208815392.

The spelling of 67528969 in words is "sixty-seven million, five hundred twenty-eight thousand, nine hundred sixty-nine".