1005662045 has 4 divisors (see below), whose sum is σ = 1206794460. Its totient is φ = 804529632.

The previous prime is 1005662023. The next prime is 1005662059. The reversal of 1005662045 is 5402665001.

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 530334841 + 475327204 = 23029^2 + 21802^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-1005662045 is a prime.

It is a super-2 number, since 2×1005662045² = 2022712297507164050, which contains 22 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 1005661999 and 1005662017.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 100566200 + ... + 100566209.

It is an arithmetic number, because the mean of its divisors is an integer number (301698615).

Almost surely, 2^1005662045 is an apocalyptic number.

It is an amenable number.

1005662045 is a deficient number, since it is larger than the sum of its proper divisors (201132415).

1005662045 is an equidigital number, since it uses as much as digits as its factorization.

1005662045 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 201132414.

The product of its (nonzero) digits is 7200, while the sum is 29.

The square root of 1005662045 is about 31712.1750278974. The cubic root of 1005662045 is about 1001.8837974123.

The spelling of 1005662045 in words is "one billion, five million, six hundred sixty-two thousand, forty-five".