68773855 has 4 divisors (see below), whose sum is σ = 82528632. Its totient is φ = 55019080.

The previous prime is 68773843. The next prime is 68773867. The reversal of 68773855 is 55837786.

It is a semiprime because it is the product of two primes.

It is an interprime number because it is at equal distance from previous prime (68773843) and next prime (68773867).

It is not a de Polignac number, because 68773855 - 2²⁵ = 35219423 is a prime.

It is a super-2 number, since 2×68773855² = 9459686263122050, which contains 22 as substring.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 68773799 and 68773808.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 6877381 + ... + 6877390.

It is an arithmetic number, because the mean of its divisors is an integer number (20632158).

Almost surely, 2^68773855 is an apocalyptic number.

68773855 is a deficient number, since it is larger than the sum of its proper divisors (13754777).

68773855 is a wasteful number, since it uses less digits than its factorization.

68773855 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 13754776.

The product of its digits is 1411200, while the sum is 49.

The square root of 68773855 is about 8293.0003617509. Note that the first 3 decimals coincide. The cubic root of 68773855 is about 409.7080114186.

The spelling of 68773855 in words is "sixty-eight million, seven hundred seventy-three thousand, eight hundred fifty-five".