88641961 has 8 divisors (see below), whose sum is σ = 94719240. Its totient is φ = 82660608.

The previous prime is 88641947. The next prime is 88641979. The reversal of 88641961 is 16914688.

It can be written as a sum of positive squares in 4 ways, for example, as 24561936 + 64080025 = 4956^2 + 8005^2 .

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 88641961 - 2¹¹ = 88639913 is a prime.

It is not an unprimeable number, because it can be changed into a prime (88641461) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 22066 + ... + 25771.

It is an arithmetic number, because the mean of its divisors is an integer number (11839905).

Almost surely, 2^88641961 is an apocalyptic number.

It is an amenable number.

88641961 is a deficient number, since it is larger than the sum of its proper divisors (6077279).

88641961 is a wasteful number, since it uses less digits than its factorization.

88641961 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 47963.

The product of its digits is 82944, while the sum is 43.

The square root of 88641961 is about 9414.9859798090. The cubic root of 88641961 is about 445.8749959687.

The spelling of 88641961 in words is "eighty-eight million, six hundred forty-one thousand, nine hundred sixty-one".