99649767 has 16 divisors (see below), whose sum is σ = 160780032. Its totient is φ = 53592960.

The previous prime is 99649763. The next prime is 99649787. The reversal of 99649767 is 76794699.

It is not a de Polignac number, because 99649767 - 2² = 99649763 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (99649763) 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, 139209 + ... + 139922.

It is an arithmetic number, because the mean of its divisors is an integer number (10048752).

Almost surely, 2^99649767 is an apocalyptic number.

99649767 is a deficient number, since it is larger than the sum of its proper divisors (61130265).

99649767 is a wasteful number, since it uses less digits than its factorization.

99649767 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 279158.

The product of its digits is 5143824, while the sum is 57.

The square root of 99649767 is about 9982.4729901964. The cubic root of 99649767 is about 463.6163703203.

The spelling of 99649767 in words is "ninety-nine million, six hundred forty-nine thousand, seven hundred sixty-seven".