1202661565 has 16 divisors (see below), whose sum is σ = 1650912768. Its totient is φ = 823908096.

The previous prime is 1202661553. The next prime is 1202661587. The reversal of 1202661565 is 5651662021.

It is a cyclic number.

It is not a de Polignac number, because 1202661565 - 2¹⁷ = 1202530493 is a prime.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 1202661565.

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, 23029 + ... + 54181.

It is an arithmetic number, because the mean of its divisors is an integer number (103182048).

Almost surely, 2^1202661565 is an apocalyptic number.

It is an amenable number.

1202661565 is a deficient number, since it is larger than the sum of its proper divisors (448251203).

1202661565 is a wasteful number, since it uses less digits than its factorization.

1202661565 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 32268.

The product of its (nonzero) digits is 21600, while the sum is 34.

The square root of 1202661565 is about 34679.4112550949. The cubic root of 1202661565 is about 1063.4436376195.

The spelling of 1202661565 in words is "one billion, two hundred two million, six hundred sixty-one thousand, five hundred sixty-five".