68898969 has 12 divisors (see below), whose sum is σ = 99617700. Its totient is φ = 45887904.

The previous prime is 68898937. The next prime is 68898971. The reversal of 68898969 is 96989886.

It can be written as a sum of positive squares in 2 ways, for example, as 56025225 + 12873744 = 7485^2 + 3588^2 .

It is not a de Polignac number, because 68898969 - 2⁵ = 68898937 is a prime.

It is a super-2 number, since 2×68898969² = 9494135858525922, which contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (68898469) 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, 7947 + ... + 14175.

It is an arithmetic number, because the mean of its divisors is an integer number (8301475).

Almost surely, 2^68898969 is an apocalyptic number.

It is an amenable number.

68898969 is a deficient number, since it is larger than the sum of its proper divisors (30718731).

68898969 is a wasteful number, since it uses less digits than its factorization.

68898969 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 7464 (or 7461 counting only the distinct ones).

The product of its digits is 13436928, while the sum is 63.

The square root of 68898969 is about 8300.5402836201. The cubic root of 68898969 is about 409.9563090465.

The spelling of 68898969 in words is "sixty-eight million, eight hundred ninety-eight thousand, nine hundred sixty-nine".