1012691 has 2 divisors, whose sum is σ = 1012692. Its totient is φ = 1012690.

The previous prime is 1012679. The next prime is 1012699. The reversal of 1012691 is 1962101.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 1012691 - 2¹⁰ = 1011667 is a prime.

It is a super-2 number, since 2×1012691² = 2051086122962, which contains 22 as substring.

It is not a weakly prime, because it can be changed into another prime (1012699) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 506345 + 506346.

It is an arithmetic number, because the mean of its divisors is an integer number (506346).

2^1012691 is an apocalyptic number.

1012691 is a deficient number, since it is larger than the sum of its proper divisors (1).

1012691 is an equidigital number, since it uses as much as digits as its factorization.

1012691 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 108, while the sum is 20.

The square root of 1012691 is about 1006.3254940624. The cubic root of 1012691 is about 100.4212562730.

Adding to 1012691 its reverse (1962101), we get a palindrome (2974792).

The spelling of 1012691 in words is "one million, twelve thousand, six hundred ninety-one".