68658072 has 64 divisors (see below), whose sum is σ = 196896000. Its totient is φ = 19543680.

The previous prime is 68658041. The next prime is 68658089. The reversal of 68658072 is 27085686.

It is a Smith number, since the sum of its digits (42) coincides with the sum of the digits of its prime factors.

It is a Harshad number since it is a multiple of its sum of digits (42).

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, 58047 + ... + 59217.

It is an arithmetic number, because the mean of its divisors is an integer number (3076500).

Almost surely, 2^68658072 is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 68658072, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (98448000).

68658072 is an abundant number, since it is smaller than the sum of its proper divisors (128237928).

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

68658072 is a wasteful number, since it uses less digits than its factorization.

68658072 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1536 (or 1532 counting only the distinct ones).

The product of its (nonzero) digits is 161280, while the sum is 42.

The square root of 68658072 is about 8286.0166545814. The cubic root of 68658072 is about 409.4779633947.

The spelling of 68658072 in words is "sixty-eight million, six hundred fifty-eight thousand, seventy-two".