68549388 has 48 divisors (see below), whose sum is σ = 166289760. Its totient is φ = 21952000.

The previous prime is 68549381. The next prime is 68549431. The reversal of 68549388 is 88394586.

It is a self number, because there is not a number n which added to its sum of digits gives 68549388.

It is not an unprimeable number, because it can be changed into a prime (68549381) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 97438 + ... + 98138.

It is an arithmetic number, because the mean of its divisors is an integer number (3464370).

Almost surely, 2^68549388 is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 68549388, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (83144880).

68549388 is an abundant number, since it is smaller than the sum of its proper divisors (97740372).

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

68549388 is a wasteful number, since it uses less digits than its factorization.

68549388 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1018 (or 1016 counting only the distinct ones).

The product of its digits is 1658880, while the sum is 51.

The square root of 68549388 is about 8279.4557792164. The cubic root of 68549388 is about 409.2617848493.

The spelling of 68549388 in words is "sixty-eight million, five hundred forty-nine thousand, three hundred eighty-eight".