1000665258 has 32 divisors (see below), whose sum is σ = 2025830400. Its totient is φ = 329495040.

The previous prime is 1000665257. The next prime is 1000665269. The reversal of 1000665258 is 8525660001.

It is not an unprimeable number, because it can be changed into a prime (1000665257) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 180918 + ... + 186366.

It is an arithmetic number, because the mean of its divisors is an integer number (63307200).

Almost surely, 2^1000665258 is an apocalyptic number.

1000665258 is an abundant number, since it is smaller than the sum of its proper divisors (1025165142).

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

1000665258 is a wasteful number, since it uses less digits than its factorization.

1000665258 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 5822.

The product of its (nonzero) digits is 14400, while the sum is 33.

The square root of 1000665258 is about 31633.2935054193. The cubic root of 1000665258 is about 1000.2217035106.

The spelling of 1000665258 in words is "one billion, six hundred sixty-five thousand, two hundred fifty-eight".