1022653665 has 24 divisors (see below), whose sum is σ = 1933746048. Its totient is φ = 495831840.

The previous prime is 1022653661. The next prime is 1022653679. The reversal of 1022653665 is 5663562201.

It is a happy number.

1022653665 is digitally balanced in base 6, because in such base it contains all the possibile digits an equal number of times.

It is not a de Polignac number, because 1022653665 - 2² = 1022653661 is a prime.

It is not an unprimeable number, because it can be changed into a prime (1022653661) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 1032489 + ... + 1033478.

It is an arithmetic number, because the mean of its divisors is an integer number (80572752).

Almost surely, 2^1022653665 is an apocalyptic number.

1022653665 is a gapful number since it is divisible by the number (15) formed by its first and last digit.

It is an amenable number.

1022653665 is a deficient number, since it is larger than the sum of its proper divisors (911092383).

1022653665 is a wasteful number, since it uses less digits than its factorization.

1022653665 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2065989 (or 2065986 counting only the distinct ones).

The product of its (nonzero) digits is 64800, while the sum is 36.

The square root of 1022653665 is about 31978.9565964870. The cubic root of 1022653665 is about 1007.4949076867.

The spelling of 1022653665 in words is "one billion, twenty-two million, six hundred fifty-three thousand, six hundred sixty-five".