99778754 has 8 divisors (see below), whose sum is σ = 152492220. Its totient is φ = 48948016.

The previous prime is 99778733. The next prime is 99778769. The reversal of 99778754 is 45787799.

99778754 = 1346² + 1347² + ... + 1398².

It can be written as a sum of positive squares in 2 ways, for example, as 90916225 + 8862529 = 9535^2 + 2977^2 .

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

It is a self number, because there is not a number n which added to its sum of digits gives 99778754.

It is an unprimeable number.

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 3 ways as a sum of consecutive naturals, for example, 470549 + ... + 470760.

Almost surely, 2^99778754 is an apocalyptic number.

99778754 is a deficient number, since it is larger than the sum of its proper divisors (52713466).

99778754 is a wasteful number, since it uses less digits than its factorization.

99778754 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 941364.

The product of its digits is 4445280, while the sum is 56.

The square root of 99778754 is about 9988.9315744978. The cubic root of 99778754 is about 463.8163196130.

The spelling of 99778754 in words is "ninety-nine million, seven hundred seventy-eight thousand, seven hundred fifty-four".