68997569 has 12 divisors (see below), whose sum is σ = 73426320. Its totient is φ = 64822680.

The previous prime is 68997557. The next prime is 68997589. The reversal of 68997569 is 96579986.

It is not a de Polignac number, because 68997569 - 2¹² = 68993473 is a prime.

It is a super-2 number, since 2×68997569² = 9521329055819522, which contains 22 as substring.

It is a Duffinian number.

It is a Curzon number.

It is not an unprimeable number, because it can be changed into a prime (68997529) by changing a digit.

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 11 ways as a sum of consecutive naturals, for example, 46562 + ... + 48020.

It is an arithmetic number, because the mean of its divisors is an integer number (6118860).

Almost surely, 2^68997569 is an apocalyptic number.

It is an amenable number.

68997569 is a deficient number, since it is larger than the sum of its proper divisors (4428751).

68997569 is a wasteful number, since it uses less digits than its factorization.

68997569 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1628 (or 1609 counting only the distinct ones).

The product of its digits is 7348320, while the sum is 59.

The square root of 68997569 is about 8306.4775326248. The cubic root of 68997569 is about 410.1517760505.

The spelling of 68997569 in words is "sixty-eight million, nine hundred ninety-seven thousand, five hundred sixty-nine".