99786628 has 6 divisors (see below), whose sum is σ = 174626606. Its totient is φ = 49893312.

The previous prime is 99786611. The next prime is 99786637. The reversal of 99786628 is 82668799.

It can be written as a sum of positive squares in only one way, i.e., 88510464 + 11276164 = 9408^2 + 3358^2 .

It is a super-2 number, since 2×99786628² = 19914742255220768, which contains 22 as substring.

It is an unprimeable number.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 12473325 + ... + 12473332.

Almost surely, 2^99786628 is an apocalyptic number.

It is an amenable number.

99786628 is a deficient number, since it is larger than the sum of its proper divisors (74839978).

99786628 is a wasteful number, since it uses less digits than its factorization.

99786628 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 24946661 (or 24946659 counting only the distinct ones).

The product of its digits is 2612736, while the sum is 55.

The square root of 99786628 is about 9989.3257029691. The cubic root of 99786628 is about 463.8285199178.

The spelling of 99786628 in words is "ninety-nine million, seven hundred eighty-six thousand, six hundred twenty-eight".