68662811 has 4 divisors (see below), whose sum is σ = 78471792. Its totient is φ = 58853832.

The previous prime is 68662801. The next prime is 68662819. The reversal of 68662811 is 11826686.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is not a de Polignac number, because 68662811 - 2¹⁰ = 68661787 is a prime.

It is a super-2 number, since 2×68662811² = 9429163228843442, which contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (68662819) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 4904480 + ... + 4904493.

It is an arithmetic number, because the mean of its divisors is an integer number (19617948).

Almost surely, 2^68662811 is an apocalyptic number.

68662811 is a deficient number, since it is larger than the sum of its proper divisors (9808981).

68662811 is an equidigital number, since it uses as much as digits as its factorization.

68662811 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 9808980.

The product of its digits is 27648, while the sum is 38.

The square root of 68662811 is about 8286.3026133493. The cubic root of 68662811 is about 409.4873843380.

The spelling of 68662811 in words is "sixty-eight million, six hundred sixty-two thousand, eight hundred eleven".