68990442 has 16 divisors (see below), whose sum is σ = 138067200. Its totient is φ = 22982432.

The previous prime is 68990431. The next prime is 68990461. The reversal of 68990442 is 24409986.

It is a junction number, because it is equal to n+sod(n) for n = 68990394 and 68990403.

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, 11998 + ... + 16790.

It is an arithmetic number, because the mean of its divisors is an integer number (8629200).

Almost surely, 2^68990442 is an apocalyptic number.

68990442 is an abundant number, since it is smaller than the sum of its proper divisors (69076758).

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

68990442 is a wasteful number, since it uses less digits than its factorization.

68990442 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 7197.

The product of its (nonzero) digits is 124416, while the sum is 42.

The square root of 68990442 is about 8306.0485190011. The cubic root of 68990442 is about 410.1376535608.

The spelling of 68990442 in words is "sixty-eight million, nine hundred ninety thousand, four hundred forty-two".