1068156686 has 8 divisors (see below), whose sum is σ = 1636325280. Its totient is φ = 522714928.

The previous prime is 1068156673. The next prime is 1068156689. The reversal of 1068156686 is 6866518601.

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

It is a super-2 number, since 2×1068156686² = 2281917411693005192, which contains 22 as substring.

It is a Harshad number since it is a multiple of its sum of digits (47).

It is a Curzon number.

It is a self number, because there is not a number n which added to its sum of digits gives 1068156686.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1068156689) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 5681591 + ... + 5681778.

It is an arithmetic number, because the mean of its divisors is an integer number (204540660).

Almost surely, 2^1068156686 is an apocalyptic number.

1068156686 is a deficient number, since it is larger than the sum of its proper divisors (568168594).

1068156686 is a wasteful number, since it uses less digits than its factorization.

1068156686 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 11363418.

The product of its (nonzero) digits is 414720, while the sum is 47.

The square root of 1068156686 is about 32682.6664456865. Note that the first 3 decimals coincide. The cubic root of 1068156686 is about 1022.2214451151.

The spelling of 1068156686 in words is "one billion, sixty-eight million, one hundred fifty-six thousand, six hundred eighty-six".