1068664931 has 16 divisors (see below), whose sum is σ = 1142605440. Its totient is φ = 996003840.

The previous prime is 1068664913. The next prime is 1068664957. The reversal of 1068664931 is 1394668601.

It is a happy number.

It is a cyclic number.

It is not a de Polignac number, because 1068664931 - 2⁶ = 1068664867 is a prime.

It is a super-2 number, since 2×1068664931² = 2284089469498469522, which contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (1568664931) 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, 1149875 + ... + 1150803.

It is an arithmetic number, because the mean of its divisors is an integer number (71412840).

Almost surely, 2^1068664931 is an apocalyptic number.

1068664931 is a deficient number, since it is larger than the sum of its proper divisors (73940509).

1068664931 is a wasteful number, since it uses less digits than its factorization.

1068664931 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1534.

The product of its (nonzero) digits is 186624, while the sum is 44.

The square root of 1068664931 is about 32690.4409728593. The cubic root of 1068664931 is about 1022.3835488481.

The spelling of 1068664931 in words is "one billion, sixty-eight million, six hundred sixty-four thousand, nine hundred thirty-one".