1038661 has 8 divisors (see below), whose sum is σ = 1130360. Its totient is φ = 948672.

The previous prime is 1038643. The next prime is 1038671. The reversal of 1038661 is 1668301.

It can be written as a sum of positive squares in 4 ways, for example, as 348100 + 690561 = 590^2 + 831^2 .

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

It is a cyclic number.

It is not a de Polignac number, because 1038661 - 2⁵ = 1038629 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1038601) 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, 1051 + ... + 1783.

It is an arithmetic number, because the mean of its divisors is an integer number (141295).

2^1038661 is an apocalyptic number.

It is an amenable number.

1038661 is a deficient number, since it is larger than the sum of its proper divisors (91699).

1038661 is a wasteful number, since it uses less digits than its factorization.

1038661 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 855.

The product of its (nonzero) digits is 864, while the sum is 25.

The square root of 1038661 is about 1019.1471925095. The cubic root of 1038661 is about 101.2724402835.

The spelling of 1038661 in words is "one million, thirty-eight thousand, six hundred sixty-one".