68778297 has 24 divisors (see below), whose sum is σ = 113892480. Its totient is φ = 39179520.

The previous prime is 68778287. The next prime is 68778299. The reversal of 68778297 is 79287786.

It is not a de Polignac number, because 68778297 - 2¹⁰ = 68777273 is a prime.

It is not an unprimeable number, because it can be changed into a prime (68778299) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 21097 + ... + 24137.

It is an arithmetic number, because the mean of its divisors is an integer number (4745520).

Almost surely, 2^68778297 is an apocalyptic number.

It is an amenable number.

68778297 is a deficient number, since it is larger than the sum of its proper divisors (45114183).

68778297 is a wasteful number, since it uses less digits than its factorization.

68778297 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3413 (or 3410 counting only the distinct ones).

The product of its digits is 2370816, while the sum is 54.

The square root of 68778297 is about 8293.2681736454. The cubic root of 68778297 is about 409.7168320370.

The spelling of 68778297 in words is "sixty-eight million, seven hundred seventy-eight thousand, two hundred ninety-seven".