9432887661 has 12 divisors (see below), whose sum is σ = 13627121820. Its totient is φ = 6287742720.

The previous prime is 9432887657. The next prime is 9432887749. The reversal of 9432887661 is 1667882349.

9432887661 is a `hidden beast` number, since 9 + 432 + 88 + 76 + 61 = 666.

It can be written as a sum of positive squares in 2 ways, for example, as 991872036 + 8441015625 = 31494^2 + 91875^2 .

It is not a de Polignac number, because 9432887661 - 2² = 9432887657 is a prime.

It is a Smith number, since the sum of its digits (54) coincides with the sum of the digits of its prime factors.

It is a junction number, because it is equal to n+sod(n) for n = 9432887598 and 9432887607.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (9432887641) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 3735 + ... + 137403.

It is an arithmetic number, because the mean of its divisors is an integer number (1135593485).

Almost surely, 2^9432887661 is an apocalyptic number.

It is an amenable number.

9432887661 is a deficient number, since it is larger than the sum of its proper divisors (4194234159).

9432887661 is a wasteful number, since it uses less digits than its factorization.

9432887661 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 141516 (or 141513 counting only the distinct ones).

The product of its digits is 3483648, while the sum is 54.

The square root of 9432887661 is about 97123.0542198916. The cubic root of 9432887661 is about 2112.9127028888.

The spelling of 9432887661 in words is "nine billion, four hundred thirty-two million, eight hundred eighty-seven thousand, six hundred sixty-one".