96628781 has 4 divisors (see below), whose sum is σ = 97625052. Its totient is φ = 95632512.

The previous prime is 96628751. The next prime is 96628789. The reversal of 96628781 is 18782669.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in 2 ways, for example, as 79744900 + 16883881 = 8930^2 + 4109^2 .

It is a cyclic number.

It is not a de Polignac number, because 96628781 - 2⁶ = 96628717 is a prime.

It is a super-2 number, since 2×96628781² = 18674242635091922, which contains 22 as substring.

It is a Duffinian number.

It is a Curzon number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (96628789) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 497990 + ... + 498183.

It is an arithmetic number, because the mean of its divisors is an integer number (24406263).

Almost surely, 2^96628781 is an apocalyptic number.

It is an amenable number.

96628781 is a deficient number, since it is larger than the sum of its proper divisors (996271).

96628781 is an equidigital number, since it uses as much as digits as its factorization.

96628781 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 996270.

The product of its digits is 290304, while the sum is 47.

The square root of 96628781 is about 9829.9939470988. The cubic root of 96628781 is about 458.8832092424.

The spelling of 96628781 in words is "ninety-six million, six hundred twenty-eight thousand, seven hundred eighty-one".