68040861 has 12 divisors (see below), whose sum is σ = 105532992. Its totient is φ = 38880408.

The previous prime is 68040859. The next prime is 68040871. The reversal of 68040861 is 16804086.

It is not a de Polignac number, because 68040861 - 2¹ = 68040859 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (68040811) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 231285 + ... + 231578.

It is an arithmetic number, because the mean of its divisors is an integer number (8794416).

Almost surely, 2^68040861 is an apocalyptic number.

It is an amenable number.

68040861 is a deficient number, since it is larger than the sum of its proper divisors (37492131).

68040861 is a wasteful number, since it uses less digits than its factorization.

68040861 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 462880 (or 462873 counting only the distinct ones).

The product of its (nonzero) digits is 9216, while the sum is 33.

The square root of 68040861 is about 8248.6884412008. The cubic root of 68040861 is about 408.2472489733.

The spelling of 68040861 in words is "sixty-eight million, forty thousand, eight hundred sixty-one".