68906420 has 24 divisors (see below), whose sum is σ = 157858848. Its totient is φ = 25056800.

The previous prime is 68906417. The next prime is 68906437. The reversal of 68906420 is 2460986.

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, 156386 + ... + 156825.

It is an arithmetic number, because the mean of its divisors is an integer number (6577452).

Almost surely, 2^68906420 is an apocalyptic number.

It is an amenable number.

68906420 is an abundant number, since it is smaller than the sum of its proper divisors (88952428).

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

68906420 is a wasteful number, since it uses less digits than its factorization.

68906420 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 313231 (or 313229 counting only the distinct ones).

The product of its (nonzero) digits is 20736, while the sum is 35.

The square root of 68906420 is about 8300.9890976919. The cubic root of 68906420 is about 409.9710865988.

The spelling of 68906420 in words is "sixty-eight million, nine hundred six thousand, four hundred twenty".