68420436 has 48 divisors (see below), whose sum is σ = 183071616. Its totient is φ = 19482624.

The previous prime is 68420413. The next prime is 68420449. The reversal of 68420436 is 63402486.

It is a junction number, because it is equal to n+sod(n) for n = 68420397 and 68420406.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 27100 + ... + 29516.

It is an arithmetic number, because the mean of its divisors is an integer number (3813992).

Almost surely, 2^68420436 is an apocalyptic number.

It is an amenable number.

68420436 is an abundant number, since it is smaller than the sum of its proper divisors (114651180).

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

68420436 is a wasteful number, since it uses less digits than its factorization.

68420436 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2768 (or 2766 counting only the distinct ones).

The product of its (nonzero) digits is 27648, while the sum is 33.

The square root of 68420436 is about 8271.6646450397. The cubic root of 68420436 is about 409.0049955253.

The spelling of 68420436 in words is "sixty-eight million, four hundred twenty thousand, four hundred thirty-six".