68890605 has 32 divisors (see below), whose sum is σ = 126316800. Its totient is φ = 31406592.

The previous prime is 68890603. The next prime is 68890621. The reversal of 68890605 is 50609886.

It is not a de Polignac number, because 68890605 - 2¹ = 68890603 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (68890603) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 52801 + ... + 54089.

It is an arithmetic number, because the mean of its divisors is an integer number (3947400).

Almost surely, 2^68890605 is an apocalyptic number.

It is an amenable number.

68890605 is a deficient number, since it is larger than the sum of its proper divisors (57426195).

68890605 is a wasteful number, since it uses less digits than its factorization.

68890605 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1813.

The product of its (nonzero) digits is 103680, while the sum is 42.

The square root of 68890605 is about 8300.0364457031. The cubic root of 68890605 is about 409.9397194740.

The spelling of 68890605 in words is "sixty-eight million, eight hundred ninety thousand, six hundred five".