68284904 has 8 divisors (see below), whose sum is σ = 128034210. Its totient is φ = 34142448.

The previous prime is 68284901. The next prime is 68284933. The reversal of 68284904 is 40948286.

It can be written as a sum of positive squares in only one way, i.e., 47582404 + 20702500 = 6898^2 + 4550^2 .

It is a tau number, because it is divible by the number of its divisors (8).

It is a super-2 number, since 2×68284904² = 9325656228578432, which contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (68284901) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 4267799 + ... + 4267814.

Almost surely, 2^68284904 is an apocalyptic number.

It is an amenable number.

68284904 is a deficient number, since it is larger than the sum of its proper divisors (59749306).

68284904 is a wasteful number, since it uses less digits than its factorization.

68284904 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 8535619 (or 8535615 counting only the distinct ones).

The product of its (nonzero) digits is 110592, while the sum is 41.

The square root of 68284904 is about 8263.4680370895. The cubic root of 68284904 is about 408.7347550793.

The spelling of 68284904 in words is "sixty-eight million, two hundred eighty-four thousand, nine hundred four".