68928823 has 2 divisors, whose sum is σ = 68928824. Its totient is φ = 68928822.

The previous prime is 68928803. The next prime is 68928833. The reversal of 68928823 is 32882986.

It is a happy number.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 68928823 - 2²¹ = 66831671 is a prime.

It is a super-3 number, since 3×68928823³ (a number of 24 digits) contains 333 as substring.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (68928803) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 34464411 + 34464412.

It is an arithmetic number, because the mean of its divisors is an integer number (34464412).

Almost surely, 2^68928823 is an apocalyptic number.

68928823 is a deficient number, since it is larger than the sum of its proper divisors (1).

68928823 is an equidigital number, since it uses as much as digits as its factorization.

68928823 is an evil number, because the sum of its binary digits is even.

The product of its digits is 331776, while the sum is 46.

The square root of 68928823 is about 8302.3384055337. The cubic root of 68928823 is about 410.0155120048.

It can be divided in two parts, 68928 and 823, that added together give a triangular number (69751 = T₃₇₃).

The spelling of 68928823 in words is "sixty-eight million, nine hundred twenty-eight thousand, eight hundred twenty-three".