1165665070 has 48 divisors (see below), whose sum is σ = 2242341792. Its totient is φ = 435462720.

The previous prime is 1165665049. The next prime is 1165665071. The reversal of 1165665070 is 705665611.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1165665071) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 423900 + ... + 426640.

It is an arithmetic number, because the mean of its divisors is an integer number (46715454).

Almost surely, 2^1165665070 is an apocalyptic number.

1165665070 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

1165665070 is a deficient number, since it is larger than the sum of its proper divisors (1076676722).

1165665070 is a wasteful number, since it uses less digits than its factorization.

1165665070 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2857 (or 2814 counting only the distinct ones).

The product of its (nonzero) digits is 37800, while the sum is 37.

The square root of 1165665070 is about 34141.8375310996. The cubic root of 1165665070 is about 1052.4252540844.

The spelling of 1165665070 in words is "one billion, one hundred sixty-five million, six hundred sixty-five thousand, seventy".