1000664527 has 4 divisors (see below), whose sum is σ = 1000861840. Its totient is φ = 1000467216.

The previous prime is 1000664503. The next prime is 1000664543. The reversal of 1000664527 is 7254660001.

It is a happy number.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 7254660001 = 59 ⋅122960339.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-1000664527 is a prime.

It is a super-2 number, since 2×1000664527² = 2002658991192267458, which contains 22 as substring.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1000664597) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 90843 + ... + 101260.

It is an arithmetic number, because the mean of its divisors is an integer number (250215460).

Almost surely, 2^1000664527 is an apocalyptic number.

1000664527 is a deficient number, since it is larger than the sum of its proper divisors (197313).

1000664527 is an equidigital number, since it uses as much as digits as its factorization.

1000664527 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 197312.

The product of its (nonzero) digits is 10080, while the sum is 31.

The square root of 1000664527 is about 31633.2819511349. The cubic root of 1000664527 is about 1000.2214599519.

The spelling of 1000664527 in words is "one billion, six hundred sixty-four thousand, five hundred twenty-seven".