68561694 has 32 divisors (see below), whose sum is σ = 155907840. Its totient is φ = 22321656.

The previous prime is 68561693. The next prime is 68561719. The reversal of 68561694 is 49616586.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (68561693) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 12442 + ... + 17085.

It is an arithmetic number, because the mean of its divisors is an integer number (4872120).

Almost surely, 2^68561694 is an apocalyptic number.

68561694 is an abundant number, since it is smaller than the sum of its proper divisors (87346146).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

68561694 is a wasteful number, since it uses less digits than its factorization.

68561694 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 29581 (or 29575 counting only the distinct ones).

The product of its digits is 311040, while the sum is 45.

The square root of 68561694 is about 8280.1989106543. The cubic root of 68561694 is about 409.2862736368.

The spelling of 68561694 in words is "sixty-eight million, five hundred sixty-one thousand, six hundred ninety-four".