1040691 has 8 divisors (see below), whose sum is σ = 1393920. Its totient is φ = 690632.

The previous prime is 1040671. The next prime is 1040717. The reversal of 1040691 is 1960401.

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 1040691 - 2⁵ = 1040659 is a prime.

It is not an unprimeable number, because it can be changed into a prime (1040651) 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, 130 + ... + 1448.

It is an arithmetic number, because the mean of its divisors is an integer number (174240).

2^1040691 is an apocalyptic number.

1040691 is a deficient number, since it is larger than the sum of its proper divisors (353229).

1040691 is a wasteful number, since it uses less digits than its factorization.

1040691 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1585.

The product of its (nonzero) digits is 216, while the sum is 21.

The square root of 1040691 is about 1020.1426370856. The cubic root of 1040691 is about 101.3383742972.

The spelling of 1040691 in words is "one million, forty thousand, six hundred ninety-one".