1061340665 has 32 divisors (see below), whose sum is σ = 1671459840. Its totient is φ = 626788800.

The previous prime is 1061340661. The next prime is 1061340667. The reversal of 1061340665 is 5660431601.

It is not a de Polignac number, because 1061340665 - 2² = 1061340661 is a prime.

It is a super-2 number, since 2×1061340665² = 2252888014365284450, which contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (1061340661) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 65231 + ... + 79860.

It is an arithmetic number, because the mean of its divisors is an integer number (52233120).

Almost surely, 2^1061340665 is an apocalyptic number.

It is an amenable number.

1061340665 is a deficient number, since it is larger than the sum of its proper divisors (610119175).

1061340665 is a wasteful number, since it uses less digits than its factorization.

1061340665 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 145133.

The product of its (nonzero) digits is 12960, while the sum is 32.

The square root of 1061340665 is about 32578.2237852219. The cubic root of 1061340665 is about 1020.0425027144.

The spelling of 1061340665 in words is "one billion, sixty-one million, three hundred forty thousand, six hundred sixty-five".