1068055815 has 16 divisors (see below), whose sum is σ = 1709852256. Its totient is φ = 569308800.

The previous prime is 1068055811. The next prime is 1068055823. The reversal of 1068055815 is 5185508601.

It is not a de Polignac number, because 1068055815 - 2² = 1068055811 is a prime.

It is a super-2 number, since 2×1068055815² = 2281486447910628450, which contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1068055811) 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, 8785 + ... + 47045.

It is an arithmetic number, because the mean of its divisors is an integer number (106865766).

Almost surely, 2^1068055815 is an apocalyptic number.

1068055815 is a gapful number since it is divisible by the number (15) formed by its first and last digit.

1068055815 is a deficient number, since it is larger than the sum of its proper divisors (641796441).

1068055815 is a wasteful number, since it uses less digits than its factorization.

1068055815 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 40130.

The product of its (nonzero) digits is 48000, while the sum is 39.

The square root of 1068055815 is about 32681.1232212114. The cubic root of 1068055815 is about 1022.1892663949.

The spelling of 1068055815 in words is "one billion, sixty-eight million, fifty-five thousand, eight hundred fifteen".