1005631646 has 32 divisors (see below), whose sum is σ = 1592275968. Its totient is φ = 475864480.

The previous prime is 1005631633. The next prime is 1005631663. The reversal of 1005631646 is 6461365001.

It is a super-2 number, since 2×1005631646² = 2022590014873338632, which contains 22 as substring.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 352301 + ... + 355143.

It is an arithmetic number, because the mean of its divisors is an integer number (49758624).

Almost surely, 2^1005631646 is an apocalyptic number.

1005631646 is a deficient number, since it is larger than the sum of its proper divisors (586644322).

1005631646 is a wasteful number, since it uses less digits than its factorization.

1005631646 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3016.

The product of its (nonzero) digits is 12960, while the sum is 32.

The square root of 1005631646 is about 31711.6957288632. The cubic root of 1005631646 is about 1001.8737023800.

Adding to 1005631646 its reverse (6461365001), we get a palindrome (7466996647).

The spelling of 1005631646 in words is "one billion, five million, six hundred thirty-one thousand, six hundred forty-six".