68650779 has 8 divisors (see below), whose sum is σ = 91847952. Its totient is φ = 45610400.

The previous prime is 68650723. The next prime is 68650783. The reversal of 68650779 is 97705686.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 68650779 - 2¹¹ = 68648731 is a prime.

It is not an unprimeable number, because it can be changed into a prime (68650079) 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 7 ways as a sum of consecutive naturals, for example, 38172 + ... + 39929.

It is an arithmetic number, because the mean of its divisors is an integer number (11480994).

Almost surely, 2^68650779 is an apocalyptic number.

68650779 is a deficient number, since it is larger than the sum of its proper divisors (23197173).

68650779 is a wasteful number, since it uses less digits than its factorization.

68650779 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 78397.

The product of its (nonzero) digits is 635040, while the sum is 48.

The square root of 68650779 is about 8285.5765641264. The cubic root of 68650779 is about 409.4634643540.

The spelling of 68650779 in words is "sixty-eight million, six hundred fifty thousand, seven hundred seventy-nine".