68279136 has 48 divisors (see below), whose sum is σ = 179734464. Its totient is φ = 22696064.

The previous prime is 68279093. The next prime is 68279149. The reversal of 68279136 is 63197286.

It is a happy number.

It is a tau number, because it is divible by the number of its divisors (48).

It is a congruent number.

It is an unprimeable number.

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 7 ways as a sum of consecutive naturals, for example, 44071 + ... + 45593.

It is an arithmetic number, because the mean of its divisors is an integer number (3744468).

Almost surely, 2^68279136 is an apocalyptic number.

It is an amenable number.

68279136 is an abundant number, since it is smaller than the sum of its proper divisors (111455328).

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

68279136 is a wasteful number, since it uses less digits than its factorization.

68279136 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2003 (or 1995 counting only the distinct ones).

The product of its digits is 108864, while the sum is 42.

The square root of 68279136 is about 8263.1190237101. The cubic root of 68279136 is about 408.7232461985.

The spelling of 68279136 in words is "sixty-eight million, two hundred seventy-nine thousand, one hundred thirty-six".