1065647633 has 4 divisors (see below), whose sum is σ = 1065779520. Its totient is φ = 1065515748.

The previous prime is 1065647621. The next prime is 1065647651. The reversal of 1065647633 is 3367465601.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4, and also an emirpimes, since its reverse is a distinct semiprime: 3367465601 = 1277 ⋅2637013.

It is a cyclic number.

It is not a de Polignac number, because 1065647633 - 2¹⁰ = 1065646609 is a prime.

It is a super-2 number, since 2×1065647633² = 2271209755437005378, which contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (1065647603) 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, 52973 + ... + 70266.

It is an arithmetic number, because the mean of its divisors is an integer number (266444880).

Almost surely, 2^1065647633 is an apocalyptic number.

It is an amenable number.

1065647633 is a deficient number, since it is larger than the sum of its proper divisors (131887).

1065647633 is an equidigital number, since it uses as much as digits as its factorization.

1065647633 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 131886.

The product of its (nonzero) digits is 272160, while the sum is 41.

The square root of 1065647633 is about 32644.2588061056. The cubic root of 1065647633 is about 1021.4204332259.

The spelling of 1065647633 in words is "one billion, sixty-five million, six hundred forty-seven thousand, six hundred thirty-three".