67525986 has 48 divisors (see below), whose sum is σ = 149423904. Its totient is φ = 20328000.

The previous prime is 67525937. The next prime is 67525987. The reversal of 67525986 is 68952576.

It is a happy number.

It is not an unprimeable number, because it can be changed into a prime (67525987) 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 23 ways as a sum of consecutive naturals, for example, 203841 + ... + 204171.

It is an arithmetic number, because the mean of its divisors is an integer number (3112998).

Almost surely, 2^67525986 is an apocalyptic number.

67525986 is a gapful number since it is divisible by the number (66) formed by its first and last digit.

It is a practical number, because each smaller number is the sum of distinct divisors of 67525986, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (74711952).

67525986 is an abundant number, since it is smaller than the sum of its proper divisors (81897918).

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

67525986 is a wasteful number, since it uses less digits than its factorization.

67525986 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 639 (or 628 counting only the distinct ones).

The product of its digits is 907200, while the sum is 48.

The square root of 67525986 is about 8217.4196679980. The cubic root of 67525986 is about 407.2148853088.

The spelling of 67525986 in words is "sixty-seven million, five hundred twenty-five thousand, nine hundred eighty-six".