1046665321 has 4 divisors (see below), whose sum is σ = 1127178052. Its totient is φ = 966152592.

The previous prime is 1046665273. The next prime is 1046665337. The reversal of 1046665321 is 1235666401.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in 2 ways, for example, as 628053721 + 418611600 = 25061^2 + 20460^2 .

It is a cyclic number.

It is not a de Polignac number, because 1046665321 - 2⁹ = 1046664809 is a prime.

It is not an unprimeable number, because it can be changed into a prime (1046665351) 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, 40256346 + ... + 40256371.

It is an arithmetic number, because the mean of its divisors is an integer number (281794513).

Almost surely, 2^1046665321 is an apocalyptic number.

It is an amenable number.

1046665321 is a deficient number, since it is larger than the sum of its proper divisors (80512731).

1046665321 is an equidigital number, since it uses as much as digits as its factorization.

1046665321 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 80512730.

The product of its (nonzero) digits is 25920, while the sum is 34.

The square root of 1046665321 is about 32352.2073590041. The cubic root of 1046665321 is about 1015.3192298312.

The spelling of 1046665321 in words is "one billion, forty-six million, six hundred sixty-five thousand, three hundred twenty-one".