1061620065 has 24 divisors (see below), whose sum is σ = 2007427968. Its totient is φ = 514724640.

The previous prime is 1061620031. The next prime is 1061620103. The reversal of 1061620065 is 5600261601.

It is a happy number.

1061620065 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is not a de Polignac number, because 1061620065 - 2¹¹ = 1061618017 is a prime.

It is a super-2 number, since 2×1061620065² = 2254074324821208450, which contains 22 as substring.

It is an unprimeable number.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 1071849 + ... + 1072838.

It is an arithmetic number, because the mean of its divisors is an integer number (83642832).

Almost surely, 2^1061620065 is an apocalyptic number.

1061620065 is a gapful number since it is divisible by the number (15) formed by its first and last digit.

It is an amenable number.

1061620065 is a deficient number, since it is larger than the sum of its proper divisors (945807903).

1061620065 is a wasteful number, since it uses less digits than its factorization.

1061620065 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2144709 (or 2144706 counting only the distinct ones).

The product of its (nonzero) digits is 2160, while the sum is 27.

The square root of 1061620065 is about 32582.5116435182. The cubic root of 1061620065 is about 1020.1320042538.

Adding to 1061620065 its reverse (5600261601), we get a palindrome (6661881666).

It can be divided in two parts, 1061 and 620065, that added together give a palindrome (621126).

The spelling of 1061620065 in words is "one billion, sixty-one million, six hundred twenty thousand, sixty-five".