68444532 has 36 divisors (see below), whose sum is σ = 186322500. Its totient is φ = 21059712.

The previous prime is 68444531. The next prime is 68444591. The reversal of 68444532 is 23544486.

68444532 is a `hidden beast` number, since 6 + 84 + 44 + 532 = 666.

It can be written as a sum of positive squares in 2 ways, for example, as 39992976 + 28451556 = 6324^2 + 5334^2 .

It is a tau number, because it is divible by the number of its divisors (36).

It is a Harshad number since it is a multiple of its sum of digits (36).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (68444531) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 72657 + ... + 73592.

It is an arithmetic number, because the mean of its divisors is an integer number (5175625).

Almost surely, 2^68444532 is an apocalyptic number.

It is an amenable number.

68444532 is an abundant number, since it is smaller than the sum of its proper divisors (117877968).

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

68444532 is a wasteful number, since it uses less digits than its factorization.

68444532 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 146272 (or 146267 counting only the distinct ones).

The product of its digits is 92160, while the sum is 36.

The square root of 68444532 is about 8273.1210555630. The cubic root of 68444532 is about 409.0530037337.

The spelling of 68444532 in words is "sixty-eight million, four hundred forty-four thousand, five hundred thirty-two".