68513292 has 18 divisors (see below), whose sum is σ = 173186468. Its totient is φ = 22837752.

The previous prime is 68513287. The next prime is 68513323. The reversal of 68513292 is 29231586.

It is a tau number, because it is divible by the number of its divisors (18).

It is a Harshad number since it is a multiple of its sum of digits (36), and also a Moran number because the ratio is a prime number: 1903147 = 68513292 / (6 + 8 + 5 + 1 + 3 + 2 + 9 + 2).

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 5 ways as a sum of consecutive naturals, for example, 951538 + ... + 951609.

Almost surely, 2^68513292 is an apocalyptic number.

It is an amenable number.

68513292 is an abundant number, since it is smaller than the sum of its proper divisors (104673176).

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

68513292 is a wasteful number, since it uses less digits than its factorization.

68513292 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1903157 (or 1903152 counting only the distinct ones).

The product of its digits is 25920, while the sum is 36.

The square root of 68513292 is about 8277.2756387594. The cubic root of 68513292 is about 409.1899373463.

The spelling of 68513292 in words is "sixty-eight million, five hundred thirteen thousand, two hundred ninety-two".