8661652631 has 2 divisors, whose sum is σ = 8661652632. Its totient is φ = 8661652630.

The previous prime is 8661652621. The next prime is 8661652673. The reversal of 8661652631 is 1362561668.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 8661652631 - 2⁶ = 8661652567 is a prime.

It is a super-2 number, since 2×8661652631² (a number of 21 digits) contains 22 as substring.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (8661652621) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 4330826315 + 4330826316.

It is an arithmetic number, because the mean of its divisors is an integer number (4330826316).

Almost surely, 2^8661652631 is an apocalyptic number.

8661652631 is a deficient number, since it is larger than the sum of its proper divisors (1).

8661652631 is an equidigital number, since it uses as much as digits as its factorization.

8661652631 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 311040, while the sum is 44.

The square root of 8661652631 is about 93068.0000376069. Note that the first 4 decimals coincide. The cubic root of 8661652631 is about 2053.6838485786.

The spelling of 8661652631 in words is "eight billion, six hundred sixty-one million, six hundred fifty-two thousand, six hundred thirty-one".