1026631 has 4 divisors (see below), whose sum is σ = 1028664. Its totient is φ = 1024600.

The previous prime is 1026593. The next prime is 1026661. The reversal of 1026631 is 1366201.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 1366201 = 31 ⋅44071.

It is a cyclic number.

It is not a de Polignac number, because 1026631 - 2⁹ = 1026119 is a prime.

It is a super-2 number, since 2×1026631² = 2107942420322, which contains 22 as substring.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 1026599 and 1026608.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1026661) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 396 + ... + 1486.

It is an arithmetic number, because the mean of its divisors is an integer number (257166).

2^1026631 is an apocalyptic number.

1026631 is a deficient number, since it is larger than the sum of its proper divisors (2033).

1026631 is an equidigital number, since it uses as much as digits as its factorization.

1026631 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2032.

The product of its (nonzero) digits is 216, while the sum is 19.

The square root of 1026631 is about 1013.2280098773. The cubic root of 1026631 is about 100.8799344431.

The spelling of 1026631 in words is "one million, twenty-six thousand, six hundred thirty-one".