68937887 has 4 divisors (see below), whose sum is σ = 69712560. Its totient is φ = 68163216.

The previous prime is 68937881. The next prime is 68937899. The reversal of 68937887 is 78873986.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 78873986 = 2 ⋅39436993.

It is a cyclic number.

It is not a de Polignac number, because 68937887 - 2¹⁸ = 68675743 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (68937881) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 387203 + ... + 387380.

It is an arithmetic number, because the mean of its divisors is an integer number (17428140).

Almost surely, 2^68937887 is an apocalyptic number.

68937887 is a deficient number, since it is larger than the sum of its proper divisors (774673).

68937887 is an equidigital number, since it uses as much as digits as its factorization.

68937887 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 774672.

The product of its digits is 4064256, while the sum is 56.

The square root of 68937887 is about 8302.8842578950. The cubic root of 68937887 is about 410.0334832857.

The spelling of 68937887 in words is "sixty-eight million, nine hundred thirty-seven thousand, eight hundred eighty-seven".