99772005 has 8 divisors (see below), whose sum is σ = 159635232. Its totient is φ = 53211728.

The previous prime is 99772003. The next prime is 99772007. The reversal of 99772005 is 50027799.

It is an interprime number because it is at equal distance from previous prime (99772003) and next prime (99772007).

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 99772005 - 2¹ = 99772003 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (99772003) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 3325719 + ... + 3325748.

It is an arithmetic number, because the mean of its divisors is an integer number (19954404).

Almost surely, 2^99772005 is an apocalyptic number.

It is an amenable number.

99772005 is a deficient number, since it is larger than the sum of its proper divisors (59863227).

99772005 is a wasteful number, since it uses less digits than its factorization.

99772005 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 6651475.

The product of its (nonzero) digits is 39690, while the sum is 39.

The square root of 99772005 is about 9988.5937448672. The cubic root of 99772005 is about 463.8058619194.

The spelling of 99772005 in words is "ninety-nine million, seven hundred seventy-two thousand, five".