1076991 has 8 divisors (see below), whose sum is σ = 1451184. Its totient is φ = 710400.

The previous prime is 1076981. The next prime is 1077017. The reversal of 1076991 is 1996701.

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

It is not a de Polignac number, because 1076991 - 2¹⁹ = 552703 is a prime.

It is a super-2 number, since 2×1076991² = 2319819228162, which contains 22 as substring.

1076991 is a lucky number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1076921) 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, 1560 + ... + 2141.

It is an arithmetic number, because the mean of its divisors is an integer number (181398).

2^1076991 is an apocalyptic number.

1076991 is a deficient number, since it is larger than the sum of its proper divisors (374193).

1076991 is an equidigital number, since it uses as much as digits as its factorization.

1076991 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3801.

The product of its (nonzero) digits is 3402, while the sum is 33.

The square root of 1076991 is about 1037.7817689669. The cubic root of 1076991 is about 102.5031845134.

It can be divided in two parts, 10769 and 91, that multiplied together give a palindrome (979979).

The spelling of 1076991 in words is "one million, seventy-six thousand, nine hundred ninety-one".