68866987 has 8 divisors (see below), whose sum is σ = 79995872. Its totient is φ = 58060800.

The previous prime is 68866979. The next prime is 68867021. The reversal of 68866987 is 78966886.

It is a sphenic number, since it is the product of 3 distinct primes.

It is not a de Polignac number, because 68866987 - 2³ = 68866979 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (68866927) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 80214 + ... + 81067.

It is an arithmetic number, because the mean of its divisors is an integer number (9999484).

Almost surely, 2^68866987 is an apocalyptic number.

68866987 is a deficient number, since it is larger than the sum of its proper divisors (11128885).

68866987 is a wasteful number, since it uses less digits than its factorization.

68866987 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 161349.

The product of its digits is 6967296, while the sum is 58.

The square root of 68866987 is about 8298.6135589025. The cubic root of 68866987 is about 409.8928671108.

The spelling of 68866987 in words is "sixty-eight million, eight hundred sixty-six thousand, nine hundred eighty-seven".