68662823 has 4 divisors (see below), whose sum is σ = 70337568. Its totient is φ = 66988080.

The previous prime is 68662819. The next prime is 68662831. The reversal of 68662823 is 32826686.

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 68662823 - 2² = 68662819 is a prime.

It is a Harshad number since it is a multiple of its sum of digits (41), and also a Moran number because the ratio is a prime number: 1674703 = 68662823 / (6 + 8 + 6 + 6 + 2 + 8 + 2 + 3).

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (68662883) 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, 837311 + ... + 837392.

It is an arithmetic number, because the mean of its divisors is an integer number (17584392).

Almost surely, 2^68662823 is an apocalyptic number.

68662823 is a deficient number, since it is larger than the sum of its proper divisors (1674745).

68662823 is a wasteful number, since it uses less digits than its factorization.

68662823 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1674744.

The product of its digits is 165888, while the sum is 41.

The square root of 68662823 is about 8286.3033374358. The cubic root of 68662823 is about 409.4874081930.

The spelling of 68662823 in words is "sixty-eight million, six hundred sixty-two thousand, eight hundred twenty-three".