68973687 has 20 divisors (see below), whose sum is σ = 106591320. Its totient is φ = 44395344.

The previous prime is 68973683. The next prime is 68973689. The reversal of 68973687 is 78637986.

It is not a de Polignac number, because 68973687 - 2² = 68973683 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (68973683) by changing a digit.

It is a polite number, since it can be written in 19 ways as a sum of consecutive naturals, for example, 12333 + ... + 17030.

It is an arithmetic number, because the mean of its divisors is an integer number (5329566).

Almost surely, 2^68973687 is an apocalyptic number.

68973687 is a deficient number, since it is larger than the sum of its proper divisors (37617633).

68973687 is a wasteful number, since it uses less digits than its factorization.

68973687 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 29404 (or 29395 counting only the distinct ones).

The product of its digits is 3048192, while the sum is 54.

The square root of 68973687 is about 8305.0398554131. The cubic root of 68973687 is about 410.1044488996.

The spelling of 68973687 in words is "sixty-eight million, nine hundred seventy-three thousand, six hundred eighty-seven".