68229987 has 16 divisors (see below), whose sum is σ = 104163840. Its totient is φ = 38915712.

The previous prime is 68229971. The next prime is 68229991. The reversal of 68229987 is 78992286.

It is a happy number.

It is not a de Polignac number, because 68229987 - 2⁴ = 68229971 is a prime.

It is a super-2 number, since 2×68229987² = 9310662252040338, which contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (68229907) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 9714 + ... + 15192.

It is an arithmetic number, because the mean of its divisors is an integer number (6510240).

Almost surely, 2^68229987 is an apocalyptic number.

68229987 is a deficient number, since it is larger than the sum of its proper divisors (35933853).

68229987 is a wasteful number, since it uses less digits than its factorization.

68229987 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 6082.

The product of its digits is 870912, while the sum is 51.

The square root of 68229987 is about 8260.1444902617. The cubic root of 68229987 is about 408.6251529792.

The spelling of 68229987 in words is "sixty-eight million, two hundred twenty-nine thousand, nine hundred eighty-seven".