68972869 has 16 divisors (see below), whose sum is σ = 83220480. Its totient is φ = 55842480.

The previous prime is 68972867. The next prime is 68972887. The reversal of 68972869 is 96827986.

It is a cyclic number.

It is not a de Polignac number, because 68972869 - 2¹ = 68972867 is a prime.

It is a super-2 number, since 2×68972869² = 9514513316182322, which contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (68972867) 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 15 ways as a sum of consecutive naturals, for example, 66384 + ... + 67414.

It is an arithmetic number, because the mean of its divisors is an integer number (5201280).

Almost surely, 2^68972869 is an apocalyptic number.

It is an amenable number.

68972869 is a deficient number, since it is larger than the sum of its proper divisors (14247611).

68972869 is a wasteful number, since it uses less digits than its factorization.

68972869 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1560.

The product of its digits is 2612736, while the sum is 55.

The square root of 68972869 is about 8304.9906080621. The cubic root of 68972869 is about 410.1028276690.

The spelling of 68972869 in words is "sixty-eight million, nine hundred seventy-two thousand, eight hundred sixty-nine".