1000564450 has 12 divisors (see below), whose sum is σ = 1861049970. Its totient is φ = 400225760.

The previous prime is 1000564391. The next prime is 1000564457. The reversal of 1000564450 is 544650001.

It can be written as a sum of positive squares in 3 ways, for example, as 552861169 + 447703281 = 23513^2 + 21159^2 .

It is a super-2 number, since 2×1000564450² = 2002258437207605000, which contains 22 as substring.

It is a Harshad number since it is a multiple of its sum of digits (25).

It is not an unprimeable number, because it can be changed into a prime (1000564457) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 10005595 + ... + 10005694.

Almost surely, 2^1000564450 is an apocalyptic number.

1000564450 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

1000564450 is a deficient number, since it is larger than the sum of its proper divisors (860485520).

1000564450 is a wasteful number, since it uses less digits than its factorization.

1000564450 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 20011301 (or 20011296 counting only the distinct ones).

The product of its (nonzero) digits is 2400, while the sum is 25.

The square root of 1000564450 is about 31631.7000807734. The cubic root of 1000564450 is about 1000.1881146107.

The spelling of 1000564450 in words is "one billion, five hundred sixty-four thousand, four hundred fifty".