68973777 has 12 divisors (see below), whose sum is σ = 105489540. Its totient is φ = 43277568.

The previous prime is 68973733. The next prime is 68973797. The reversal of 68973777 is 77737986.

It is a happy number.

It can be written as a sum of positive squares in 2 ways, for example, as 49999041 + 18974736 = 7071^2 + 4356^2 .

It is not a de Polignac number, because 68973777 - 2¹⁹ = 68449489 is a prime.

It is not an unprimeable number, because it can be changed into a prime (68973797) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 225252 + ... + 225557.

It is an arithmetic number, because the mean of its divisors is an integer number (8790795).

Almost surely, 2^68973777 is an apocalyptic number.

It is an amenable number.

68973777 is a deficient number, since it is larger than the sum of its proper divisors (36515763).

68973777 is a wasteful number, since it uses less digits than its factorization.

68973777 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 450832 (or 450829 counting only the distinct ones).

The product of its digits is 3111696, while the sum is 54.

The square root of 68973777 is about 8305.0452738080. The cubic root of 68973777 is about 410.1046272739.

The spelling of 68973777 in words is "sixty-eight million, nine hundred seventy-three thousand, seven hundred seventy-seven".