99161763 has 16 divisors (see below), whose sum is σ = 138324480. Its totient is φ = 63068544.

The previous prime is 99161747. The next prime is 99161767. The reversal of 99161763 is 36716199.

It is a Cunningham number, because it is equal to 9958²-1.

It is not a de Polignac number, because 99161763 - 2⁴ = 99161747 is a prime.

It is not an unprimeable number, because it can be changed into a prime (99161767) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 28218 + ... + 31536.

It is an arithmetic number, because the mean of its divisors is an integer number (8645280).

Almost surely, 2^99161763 is an apocalyptic number.

99161763 is a deficient number, since it is larger than the sum of its proper divisors (39162717).

99161763 is a wasteful number, since it uses less digits than its factorization.

99161763 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3778.

The product of its digits is 61236, while the sum is 42.

The square root of 99161763 is about 9957.9999497891. Note that the first 4 decimals coincide. The cubic root of 99161763 is about 462.8583254782.

The spelling of 99161763 in words is "ninety-nine million, one hundred sixty-one thousand, seven hundred sixty-three".