68156072 has 16 divisors (see below), whose sum is σ = 131247060. Its totient is φ = 33156864.

The previous prime is 68156057. The next prime is 68156083. The reversal of 68156072 is 27065186.

It can be written as a sum of positive squares in 2 ways, for example, as 68128516 + 27556 = 8254^2 + 166^2 .

It is a Smith number, since the sum of its digits (35) coincides with the sum of the digits of its prime factors.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 114833 + ... + 115424.

Almost surely, 2^68156072 is an apocalyptic number.

It is an amenable number.

68156072 is a deficient number, since it is larger than the sum of its proper divisors (63090988).

68156072 is a wasteful number, since it uses less digits than its factorization.

68156072 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 230300 (or 230296 counting only the distinct ones).

The product of its (nonzero) digits is 20160, while the sum is 35.

The square root of 68156072 is about 8255.6690825154. The cubic root of 68156072 is about 408.4775422155.

The spelling of 68156072 in words is "sixty-eight million, one hundred fifty-six thousand, seventy-two".