1065645652 has 12 divisors (see below), whose sum is σ = 1871814420. Its totient is φ = 530841536.

The previous prime is 1065645643. The next prime is 1065645667. The reversal of 1065645652 is 2565465601.

It can be written as a sum of positive squares in 2 ways, for example, as 257153296 + 808492356 = 16036^2 + 28434^2 .

It is a super-2 number, since 2×1065645652² = 2271201311253010208, which contains 22 as substring.

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, 494113 + ... + 496264.

It is an arithmetic number, because the mean of its divisors is an integer number (155984535).

Almost surely, 2^1065645652 is an apocalyptic number.

It is an amenable number.

1065645652 is a deficient number, since it is larger than the sum of its proper divisors (806168768).

1065645652 is a wasteful number, since it uses less digits than its factorization.

1065645652 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 990650 (or 990648 counting only the distinct ones).

The product of its (nonzero) digits is 216000, while the sum is 40.

The square root of 1065645652 is about 32644.2284638495. The cubic root of 1065645652 is about 1021.4198002977.

The spelling of 1065645652 in words is "one billion, sixty-five million, six hundred forty-five thousand, six hundred fifty-two".