68578452 has 36 divisors (see below), whose sum is σ = 177043776. Its totient is φ = 22372560.

The previous prime is 68578451. The next prime is 68578469. The reversal of 68578452 is 25487586.

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

It is a junction number, because it is equal to n+sod(n) for n = 68578398 and 68578407.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (68578451) 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 11 ways as a sum of consecutive naturals, for example, 18574 + ... + 21957.

Almost surely, 2^68578452 is an apocalyptic number.

It is an amenable number.

68578452 is an abundant number, since it is smaller than the sum of its proper divisors (108465324).

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

68578452 is a wasteful number, since it uses less digits than its factorization.

68578452 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 40588 (or 40583 counting only the distinct ones).

The product of its digits is 537600, while the sum is 45.

The square root of 68578452 is about 8281.2107810392. The cubic root of 68578452 is about 409.3196171373.

The spelling of 68578452 in words is "sixty-eight million, five hundred seventy-eight thousand, four hundred fifty-two".