68577638 has 4 divisors (see below), whose sum is σ = 102866460. Its totient is φ = 34288818.

The previous prime is 68577599. The next prime is 68577659. The reversal of 68577638 is 83677586.

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

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 17144408 + ... + 17144411.

It is an arithmetic number, because the mean of its divisors is an integer number (25716615).

Almost surely, 2^68577638 is an apocalyptic number.

68577638 is a deficient number, since it is larger than the sum of its proper divisors (34288822).

68577638 is a wasteful number, since it uses less digits than its factorization.

68577638 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 34288821.

The product of its digits is 1693440, while the sum is 50.

The square root of 68577638 is about 8281.1616334908. The cubic root of 68577638 is about 409.3179976418.

The spelling of 68577638 in words is "sixty-eight million, five hundred seventy-seven thousand, six hundred thirty-eight".