68280775 has 24 divisors (see below), whose sum is σ = 91224320. Its totient is φ = 50531040.

The previous prime is 68280757. The next prime is 68280787. The reversal of 68280775 is 57708286.

It is a happy number.

It is not a de Polignac number, because 68280775 - 2⁹ = 68280263 is a prime.

It is a Harshad number since it is a multiple of its sum of digits (43).

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 18754 + ... + 22096.

Almost surely, 2^68280775 is an apocalyptic number.

68280775 is a deficient number, since it is larger than the sum of its proper divisors (22943545).

68280775 is a wasteful number, since it uses less digits than its factorization.

68280775 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3415 (or 3410 counting only the distinct ones).

The product of its (nonzero) digits is 188160, while the sum is 43.

The square root of 68280775 is about 8263.2181987407. The cubic root of 68280775 is about 408.7265165584.

The spelling of 68280775 in words is "sixty-eight million, two hundred eighty thousand, seven hundred seventy-five".