1065664634 has 4 divisors (see below), whose sum is σ = 1598496954. Its totient is φ = 532832316.

The previous prime is 1065664619. The next prime is 1065664637. The reversal of 1065664634 is 4364665601.

1065664634 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 4364665601 = 137 ⋅31858873.

It can be written as a sum of positive squares in only one way, i.e., 1014613609 + 51051025 = 31853^2 + 7145^2 .

It is a super-2 number, since 2×1065664634² = 2271282224316707912, which contains 22 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 1065664591 and 1065664600.

It is not an unprimeable number, because it can be changed into a prime (1065664637) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 266416157 + ... + 266416160.

Almost surely, 2^1065664634 is an apocalyptic number.

1065664634 is a deficient number, since it is larger than the sum of its proper divisors (532832320).

1065664634 is an equidigital number, since it uses as much as digits as its factorization.

1065664634 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 532832319.

The product of its (nonzero) digits is 311040, while the sum is 41.

The square root of 1065664634 is about 32644.5192030760. The cubic root of 1065664634 is about 1021.4258650015.

The spelling of 1065664634 in words is "one billion, sixty-five million, six hundred sixty-four thousand, six hundred thirty-four".