8720621132 has 6 divisors (see below), whose sum is σ = 15261086988. Its totient is φ = 4360310564.

The previous prime is 8720621101. The next prime is 8720621141. The reversal of 8720621132 is 2311260278.

It is a super-2 number, since 2×8720621132² (a number of 21 digits) contains 22 as substring.

It is an unprimeable number.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 1090077638 + ... + 1090077645.

It is an arithmetic number, because the mean of its divisors is an integer number (2543514498).

Almost surely, 2^8720621132 is an apocalyptic number.

It is an amenable number.

8720621132 is a deficient number, since it is larger than the sum of its proper divisors (6540465856).

8720621132 is a wasteful number, since it uses less digits than its factorization.

8720621132 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2180155287 (or 2180155285 counting only the distinct ones).

The product of its (nonzero) digits is 8064, while the sum is 32.

The square root of 8720621132 is about 93384.2659766623. The cubic root of 8720621132 is about 2058.3338030315. Note that the first 3 decimals are identical.

The spelling of 8720621132 in words is "eight billion, seven hundred twenty million, six hundred twenty-one thousand, one hundred thirty-two".