68971811 has 8 divisors (see below), whose sum is σ = 71008320. Its totient is φ = 66944448.

The previous prime is 68971781. The next prime is 68971841. The reversal of 68971811 is 11817986.

It is an interprime number because it is at equal distance from previous prime (68971781) and next prime (68971841).

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-68971811 is a prime.

It is a super-2 number, since 2×68971811² = 9514221425239442, which contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (68971841) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 14870 + ... + 18948.

It is an arithmetic number, because the mean of its divisors is an integer number (8876040).

Almost surely, 2^68971811 is an apocalyptic number.

68971811 is a deficient number, since it is larger than the sum of its proper divisors (2036509).

68971811 is a wasteful number, since it uses less digits than its factorization.

68971811 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4573.

The product of its digits is 24192, while the sum is 41.

The square root of 68971811 is about 8304.9269111775. The cubic root of 68971811 is about 410.1007307526.

The spelling of 68971811 in words is "sixty-eight million, nine hundred seventy-one thousand, eight hundred eleven".