1000664695 has 4 divisors (see below), whose sum is σ = 1200797640. Its totient is φ = 800531752.

The previous prime is 1000664681. The next prime is 1000664713. The reversal of 1000664695 is 5964660001.

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

It is a cyclic number.

It is not a de Polignac number, because 1000664695 - 2²⁷ = 866446967 is a prime.

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, 100066465 + ... + 100066474.

It is an arithmetic number, because the mean of its divisors is an integer number (300199410).

Almost surely, 2^1000664695 is an apocalyptic number.

1000664695 is a deficient number, since it is larger than the sum of its proper divisors (200132945).

1000664695 is an equidigital number, since it uses as much as digits as its factorization.

1000664695 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 200132944.

The product of its (nonzero) digits is 38880, while the sum is 37.

The square root of 1000664695 is about 31633.2846065659. The cubic root of 1000664695 is about 1000.2215159271.

The spelling of 1000664695 in words is "one billion, six hundred sixty-four thousand, six hundred ninety-five".