1000665570 has 16 divisors (see below), whose sum is σ = 2401597440. Its totient is φ = 266844144.

The previous prime is 1000665541. The next prime is 1000665607. The reversal of 1000665570 is 755660001.

It is a super-3 number, since 3×1000665570³ (a number of 28 digits) contains 333 as substring.

It is a Harshad number since it is a multiple of its sum of digits (30), and also a Moran number because the ratio is a prime number: 33355519 = 1000665570 / (1 + 0 + 0 + 0 + 6 + 6 + 5 + 5 + 7 + 0).

It is a Curzon number.

It is an unprimeable number.

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 7 ways as a sum of consecutive naturals, for example, 16677730 + ... + 16677789.

It is an arithmetic number, because the mean of its divisors is an integer number (150099840).

Almost surely, 2^1000665570 is an apocalyptic number.

1000665570 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

1000665570 is an abundant number, since it is smaller than the sum of its proper divisors (1400931870).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

1000665570 is a wasteful number, since it uses less digits than its factorization.

1000665570 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 33355529.

The product of its (nonzero) digits is 6300, while the sum is 30.

The square root of 1000665570 is about 31633.2984369319. The cubic root of 1000665570 is about 1000.2218074645.

The spelling of 1000665570 in words is "one billion, six hundred sixty-five thousand, five hundred seventy".