68088992 has 24 divisors (see below), whose sum is σ = 134234100. Its totient is φ = 33997824.

The previous prime is 68088973. The next prime is 68088997. The reversal of 68088992 is 29988086.

It can be written as a sum of positive squares in 2 ways, for example, as 57093136 + 10995856 = 7556^2 + 3316^2 .

It is a super-2 number, since 2×68088992² = 9272221663152128, which contains 22 as substring.

It is a self number, because there is not a number n which added to its sum of digits gives 68088992.

It is not an unprimeable number, because it can be changed into a prime (68088997) 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 3 ways as a sum of consecutive naturals, for example, 44984 + ... + 46472.

Almost surely, 2^68088992 is an apocalyptic number.

It is an amenable number.

68088992 is a deficient number, since it is larger than the sum of its proper divisors (66145108).

68088992 is a wasteful number, since it uses less digits than its factorization.

68088992 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2928 (or 2920 counting only the distinct ones).

The product of its (nonzero) digits is 497664, while the sum is 50.

The square root of 68088992 is about 8251.6054195532. The cubic root of 68088992 is about 408.3434887751.

The spelling of 68088992 in words is "sixty-eight million, eighty-eight thousand, nine hundred ninety-two".