1071663 has 8 divisors (see below), whose sum is σ = 1513008. Its totient is φ = 672384.

The previous prime is 1071661. The next prime is 1071671. The reversal of 1071663 is 3661701.

It is a sphenic number, since it is the product of 3 distinct primes.

It is not a de Polignac number, because 1071663 - 2¹ = 1071661 is a prime.

It is a super-2 number, since 2×1071663² = 2296923171138, which contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1071661) 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, 10456 + ... + 10557.

It is an arithmetic number, because the mean of its divisors is an integer number (189126).

2^1071663 is an apocalyptic number.

1071663 is a deficient number, since it is larger than the sum of its proper divisors (441345).

1071663 is a wasteful number, since it uses less digits than its factorization.

1071663 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 21033.

The product of its (nonzero) digits is 756, while the sum is 24.

The square root of 1071663 is about 1035.2115725783. The cubic root of 1071663 is about 102.3338732714. Note that the first 3 decimals are identical.

It can be divided in two parts, 107 and 1663, that added together give a triangular number (1770 = T₅₉).

The spelling of 1071663 in words is "one million, seventy-one thousand, six hundred sixty-three".