1065644630 has 32 divisors (see below), whose sum is σ = 1967725440. Its totient is φ = 415324800.

The previous prime is 1065644557. The next prime is 1065644663. The reversal of 1065644630 is 364465601.

It is a super-2 number, since 2×1065644630² = 2271196954895673800, 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 15 ways as a sum of consecutive naturals, for example, 102680 + ... + 112580.

It is an arithmetic number, because the mean of its divisors is an integer number (61491420).

Almost surely, 2^1065644630 is an apocalyptic number.

1065644630 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

1065644630 is a deficient number, since it is larger than the sum of its proper divisors (902080810).

1065644630 is a wasteful number, since it uses less digits than its factorization.

1065644630 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 10184.

The product of its (nonzero) digits is 51840, while the sum is 35.

The square root of 1065644630 is about 32644.2128102364. The cubic root of 1065644630 is about 1021.4194737691.

The spelling of 1065644630 in words is "one billion, sixty-five million, six hundred forty-four thousand, six hundred thirty".