1068662491 has 8 divisors (see below), whose sum is σ = 1151256960. Its totient is φ = 986123712.

The previous prime is 1068662471. The next prime is 1068662519. The reversal of 1068662491 is 1942668601.

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

It is a cyclic number.

It is not a de Polignac number, because 1068662491 - 2⁵ = 1068662459 is a prime.

It is a super-2 number, since 2×1068662491² = 2284079039340650162, which contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (1068662401) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 31431 + ... + 55903.

It is an arithmetic number, because the mean of its divisors is an integer number (143907120).

Almost surely, 2^1068662491 is an apocalyptic number.

1068662491 is a deficient number, since it is larger than the sum of its proper divisors (82594469).

1068662491 is a wasteful number, since it uses less digits than its factorization.

1068662491 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 27845.

The product of its (nonzero) digits is 124416, while the sum is 43.

The square root of 1068662491 is about 32690.4036530600. The cubic root of 1068662491 is about 1022.3827707377.

The spelling of 1068662491 in words is "one billion, sixty-eight million, six hundred sixty-two thousand, four hundred ninety-one".