68854987 has 4 divisors (see below), whose sum is σ = 69798280. Its totient is φ = 67911696.

The previous prime is 68854979. The next prime is 68855011. The reversal of 68854987 is 78945886.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 78945886 = 2 ⋅39472943.

It is a cyclic number.

It is not a de Polignac number, because 68854987 - 2³ = 68854979 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (68854957) 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, 471537 + ... + 471682.

It is an arithmetic number, because the mean of its divisors is an integer number (17449570).

Almost surely, 2^68854987 is an apocalyptic number.

68854987 is a deficient number, since it is larger than the sum of its proper divisors (943293).

68854987 is an equidigital number, since it uses as much as digits as its factorization.

68854987 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 943292.

The product of its digits is 3870720, while the sum is 55.

The square root of 68854987 is about 8297.8905150647. The cubic root of 68854987 is about 409.8690579276.

The spelling of 68854987 in words is "sixty-eight million, eight hundred fifty-four thousand, nine hundred eighty-seven".