68491488 has 48 divisors (see below), whose sum is σ = 193623696. Its totient is φ = 21073920.

The previous prime is 68491483. The next prime is 68491537. The reversal of 68491488 is 88419486.

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

It is a Harshad number since it is a multiple of its sum of digits (48).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (68491483) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 26193 + ... + 28688.

It is an arithmetic number, because the mean of its divisors is an integer number (4033827).

Almost surely, 2^68491488 is an apocalyptic number.

It is an amenable number.

68491488 is an abundant number, since it is smaller than the sum of its proper divisors (125132208).

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

68491488 is a wasteful number, since it uses less digits than its factorization.

68491488 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 54907 (or 54899 counting only the distinct ones).

The product of its digits is 442368, while the sum is 48.

The square root of 68491488 is about 8275.9584339217. The cubic root of 68491488 is about 409.1465252153.

The spelling of 68491488 in words is "sixty-eight million, four hundred ninety-one thousand, four hundred eighty-eight".