1061631 has 6 divisors (see below), whose sum is σ = 1533480. Its totient is φ = 707748.

The previous prime is 1061629. The next prime is 1061647. The reversal of 1061631 is 1361601.

It is not a de Polignac number, because 1061631 - 2¹ = 1061629 is a prime.

It is a super-2 number, since 2×1061631² = 2254120760322, which contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1061651) by changing a digit.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 58971 + ... + 58988.

It is an arithmetic number, because the mean of its divisors is an integer number (255580).

2^1061631 is an apocalyptic number.

1061631 is a deficient number, since it is larger than the sum of its proper divisors (471849).

1061631 is a wasteful number, since it uses less digits than its factorization.

1061631 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 117965 (or 117962 counting only the distinct ones).

The product of its (nonzero) digits is 108, while the sum is 18.

The square root of 1061631 is about 1030.3547932630. The cubic root of 1061631 is about 102.0135506795.

The spelling of 1061631 in words is "one million, sixty-one thousand, six hundred thirty-one".