68981958 has 24 divisors (see below), whose sum is σ = 150836400. Its totient is φ = 22782384.

The previous prime is 68981953. The next prime is 68981959. The reversal of 68981958 is 85918986.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (68981953) 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 11 ways as a sum of consecutive naturals, for example, 15618 + ... + 19541.

It is an arithmetic number, because the mean of its divisors is an integer number (6284850).

Almost surely, 2^68981958 is an apocalyptic number.

68981958 is an abundant number, since it is smaller than the sum of its proper divisors (81854442).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

68981958 is a wasteful number, since it uses less digits than its factorization.

68981958 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 35276 (or 35273 counting only the distinct ones).

The product of its digits is 1244160, while the sum is 54.

The square root of 68981958 is about 8305.5377911367. The cubic root of 68981958 is about 410.1208408430.

The spelling of 68981958 in words is "sixty-eight million, nine hundred eighty-one thousand, nine hundred fifty-eight".