68040591 has 8 divisors (see below), whose sum is σ = 91059120. Its totient is φ = 45191232.

The previous prime is 68040571. The next prime is 68040593. The reversal of 68040591 is 19504086.

It is a sphenic number, since it is the product of 3 distinct primes.

It is not a de Polignac number, because 68040591 - 2⁶ = 68040527 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (68040593) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 41350 + ... + 42963.

It is an arithmetic number, because the mean of its divisors is an integer number (11382390).

Almost surely, 2^68040591 is an apocalyptic number.

68040591 is a deficient number, since it is larger than the sum of its proper divisors (23018529).

68040591 is a wasteful number, since it uses less digits than its factorization.

68040591 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 84585.

The product of its (nonzero) digits is 8640, while the sum is 33.

The square root of 68040591 is about 8248.6720749464. The cubic root of 68040591 is about 408.2467089698.

The spelling of 68040591 in words is "sixty-eight million, forty thousand, five hundred ninety-one".