99603965 has 16 divisors (see below), whose sum is σ = 123726960. Its totient is φ = 76922880.

The previous prime is 99603949. The next prime is 99603971. The reversal of 99603965 is 56930699.

It can be written as a sum of positive squares in 8 ways, for example, as 14577124 + 85026841 = 3818^2 + 9221^2 .

It is not a de Polignac number, because 99603965 - 2⁴ = 99603949 is a prime.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 17381 + ... + 22389.

It is an arithmetic number, because the mean of its divisors is an integer number (7732935).

Almost surely, 2^99603965 is an apocalyptic number.

It is an amenable number.

99603965 is a deficient number, since it is larger than the sum of its proper divisors (24122995).

99603965 is a wasteful number, since it uses less digits than its factorization.

99603965 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 5152.

The product of its (nonzero) digits is 393660, while the sum is 47.

The square root of 99603965 is about 9980.1786056162. The cubic root of 99603965 is about 463.5453288055.

The spelling of 99603965 in words is "ninety-nine million, six hundred three thousand, nine hundred sixty-five".