99775601 has 4 divisors (see below), whose sum is σ = 105644772. Its totient is φ = 93906432.

The previous prime is 99775589. The next prime is 99775603. The reversal of 99775601 is 10657799.

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 81721600 + 18054001 = 9040^2 + 4249^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-99775601 is a prime.

It is a super-2 number, since 2×99775601² = 19910341109822402, which contains 22 as substring.

It is a Duffinian number.

It is a Curzon number.

It is not an unprimeable number, because it can be changed into a prime (99775603) 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, 2934560 + ... + 2934593.

It is an arithmetic number, because the mean of its divisors is an integer number (26411193).

Almost surely, 2^99775601 is an apocalyptic number.

It is an amenable number.

99775601 is a deficient number, since it is larger than the sum of its proper divisors (5869171).

99775601 is a wasteful number, since it uses less digits than its factorization.

99775601 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 5869170.

The product of its (nonzero) digits is 119070, while the sum is 44.

The square root of 99775601 is about 9988.7737485639. The cubic root of 99775601 is about 463.8114340430.

The spelling of 99775601 in words is "ninety-nine million, seven hundred seventy-five thousand, six hundred one".