1061650065 has 32 divisors (see below), whose sum is σ = 1993777920. Its totient is φ = 472207104.

The previous prime is 1061650063. The next prime is 1061650103. The reversal of 1061650065 is 5600561601.

It is not a de Polignac number, because 1061650065 - 2¹ = 1061650063 is a prime.

It is a super-2 number, since 2×1061650065² = 2254201721029008450, which contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (1061650063) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 132750 + ... + 140519.

It is an arithmetic number, because the mean of its divisors is an integer number (62305560).

Almost surely, 2^1061650065 is an apocalyptic number.

1061650065 is a gapful number since it is divisible by the number (15) formed by its first and last digit.

It is an amenable number.

1061650065 is a deficient number, since it is larger than the sum of its proper divisors (932127855).

1061650065 is a wasteful number, since it uses less digits than its factorization.

1061650065 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 273321.

The product of its (nonzero) digits is 5400, while the sum is 30.

The square root of 1061650065 is about 32582.9720099318. The cubic root of 1061650065 is about 1020.1416133637.

The spelling of 1061650065 in words is "one billion, sixty-one million, six hundred fifty thousand, sixty-five".