96556991 has 8 divisors (see below), whose sum is σ = 102355344. Its totient is φ = 90771840.

The previous prime is 96556963. The next prime is 96557017. The reversal of 96556991 is 19965569.

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

It is a de Polignac number, because none of the positive numbers 2^k-96556991 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (96556931) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 14576 + ... + 20138.

It is an arithmetic number, because the mean of its divisors is an integer number (12794418).

Almost surely, 2^96556991 is an apocalyptic number.

96556991 is a deficient number, since it is larger than the sum of its proper divisors (5798353).

96556991 is a wasteful number, since it uses less digits than its factorization.

96556991 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 6601.

The product of its digits is 656100, while the sum is 50.

The square root of 96556991 is about 9826.3416895608. The cubic root of 96556991 is about 458.7695392193.

The spelling of 96556991 in words is "ninety-six million, five hundred fifty-six thousand, nine hundred ninety-one".