68661528 has 96 divisors (see below), whose sum is σ = 191847600. Its totient is φ = 20355840.

The previous prime is 68661499. The next prime is 68661557. The reversal of 68661528 is 82516686.

It is an interprime number because it is at equal distance from previous prime (68661499) and next prime (68661557).

It is a self number, because there is not a number n which added to its sum of digits gives 68661528.

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 23 ways as a sum of consecutive naturals, for example, 299718 + ... + 299946.

Almost surely, 2^68661528 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 68661528, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (95923800).

68661528 is an abundant number, since it is smaller than the sum of its proper divisors (123186072).

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

68661528 is a wasteful number, since it uses less digits than its factorization.

68661528 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 313 (or 278 counting only the distinct ones).

The product of its digits is 138240, while the sum is 42.

The square root of 68661528 is about 8286.2251960709. The cubic root of 68661528 is about 409.4848338279.

The spelling of 68661528 in words is "sixty-eight million, six hundred sixty-one thousand, five hundred twenty-eight".