68449632 has 48 divisors (see below), whose sum is σ = 180633600. Its totient is φ = 22695552.

The previous prime is 68449613. The next prime is 68449651. The reversal of 68449632 is 23694486.

It is a happy number.

It is an interprime number because it is at equal distance from previous prime (68449613) and next prime (68449651).

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

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 17313 + ... + 20895.

It is an arithmetic number, because the mean of its divisors is an integer number (3763200).

Almost surely, 2^68449632 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 68449632, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (90316800).

68449632 is an abundant number, since it is smaller than the sum of its proper divisors (112183968).

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

68449632 is a wasteful number, since it uses less digits than its factorization.

68449632 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3795 (or 3787 counting only the distinct ones).

The product of its digits is 248832, while the sum is 42.

The square root of 68449632 is about 8273.4292769081. The cubic root of 68449632 is about 409.0631633887.

The spelling of 68449632 in words is "sixty-eight million, four hundred forty-nine thousand, six hundred thirty-two".