68940423 has 16 divisors (see below), whose sum is σ = 108142560. Its totient is φ = 43256448.

The previous prime is 68940419. The next prime is 68940449. The reversal of 68940423 is 32404986.

It is a happy number.

It is not a de Polignac number, because 68940423 - 2² = 68940419 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (68940463) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 74640 + ... + 75557.

It is an arithmetic number, because the mean of its divisors is an integer number (6758910).

Almost surely, 2^68940423 is an apocalyptic number.

68940423 is a deficient number, since it is larger than the sum of its proper divisors (39202137).

68940423 is a wasteful number, since it uses less digits than its factorization.

68940423 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 150223 (or 150217 counting only the distinct ones).

The product of its (nonzero) digits is 41472, while the sum is 36.

The square root of 68940423 is about 8303.0369745052. The cubic root of 68940423 is about 410.0385111555.

The spelling of 68940423 in words is "sixty-eight million, nine hundred forty thousand, four hundred twenty-three".