1296655632 has 60 divisors (see below), whose sum is σ = 3631255680. Its totient is φ = 431930304.

The previous prime is 1296655571. The next prime is 1296655651. The reversal of 1296655632 is 2365566921.

1296655632 is a `hidden beast` number, since 1 + 2 + 9 + 6 + 6 + 5 + 5 + 632 = 666.

It is an unprimeable number.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 414169 + ... + 417287.

It is an arithmetic number, because the mean of its divisors is an integer number (60520928).

Almost surely, 2^1296655632 is an apocalyptic number.

1296655632 is a gapful number since it is divisible by the number (12) formed by its first and last digit.

It is an amenable number.

1296655632 is an abundant number, since it is smaller than the sum of its proper divisors (2334600048).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

1296655632 is a wasteful number, since it uses less digits than its factorization.

1296655632 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 6020 (or 6011 counting only the distinct ones).

The product of its digits is 583200, while the sum is 45.

The square root of 1296655632 is about 36009.1048486352. The cubic root of 1296655632 is about 1090.4561769286.

The spelling of 1296655632 in words is "one billion, two hundred ninety-six million, six hundred fifty-five thousand, six hundred thirty-two".