68800069 has 12 divisors (see below), whose sum is σ = 75002916. Its totient is φ = 63078912.

The previous prime is 68800051. The next prime is 68800079. The reversal of 68800069 is 96000886.

It can be written as a sum of positive squares in 6 ways, for example, as 12744900 + 56055169 = 3570^2 + 7487^2 .

It is not a de Polignac number, because 68800069 - 2⁹ = 68799557 is a prime.

It is a super-2 number, since 2×68800069² = 9466898988809522, which contains 22 as substring.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (68800049) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 25237 + ... + 27829.

It is an arithmetic number, because the mean of its divisors is an integer number (6250243).

Almost surely, 2^68800069 is an apocalyptic number.

It is an amenable number.

68800069 is a deficient number, since it is larger than the sum of its proper divisors (6202847).

68800069 is a wasteful number, since it uses less digits than its factorization.

68800069 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2776 (or 2763 counting only the distinct ones).

The product of its (nonzero) digits is 20736, while the sum is 37.

The square root of 68800069 is about 8294.5807006744. The cubic root of 68800069 is about 409.7600598873.

The spelling of 68800069 in words is "sixty-eight million, eight hundred thousand, sixty-nine".