68372039 has 4 divisors (see below), whose sum is σ = 68418456. Its totient is φ = 68325624.

The previous prime is 68371993. The next prime is 68372047. The reversal of 68372039 is 93027386.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 93027386 = 2 ⋅46513693.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-68372039 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 68371993 and 68372011.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (68672039) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 20924 + ... + 23969.

It is an arithmetic number, because the mean of its divisors is an integer number (17104614).

Almost surely, 2^68372039 is an apocalyptic number.

68372039 is a deficient number, since it is larger than the sum of its proper divisors (46417).

68372039 is a wasteful number, since it uses less digits than its factorization.

68372039 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 46416.

The product of its (nonzero) digits is 54432, while the sum is 38.

The square root of 68372039 is about 8268.7386583445. The cubic root of 68372039 is about 408.9085366065.

The spelling of 68372039 in words is "sixty-eight million, three hundred seventy-two thousand, thirty-nine".