68473786 has 4 divisors (see below), whose sum is σ = 102710682. Its totient is φ = 34236892.

The previous prime is 68473751. The next prime is 68473871. The reversal of 68473786 is 68737486.

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

It can be written as a sum of positive squares in only one way, i.e., 55041561 + 13432225 = 7419^2 + 3665^2 .

It is an unprimeable number.

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 as a sum of consecutive naturals, namely, 17118445 + ... + 17118448.

Almost surely, 2^68473786 is an apocalyptic number.

68473786 is a deficient number, since it is larger than the sum of its proper divisors (34236896).

68473786 is a wasteful number, since it uses less digits than its factorization.

68473786 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 34236895.

The product of its digits is 1354752, while the sum is 49.

The square root of 68473786 is about 8274.8888814292. Note that the first 5 decimals coincide. The cubic root of 68473786 is about 409.1112734584. Note that the first 3 decimals are identical.

The spelling of 68473786 in words is "sixty-eight million, four hundred seventy-three thousand, seven hundred eighty-six".