99665077 has 2 divisors, whose sum is σ = 99665078. Its totient is φ = 99665076.

The previous prime is 99665053. The next prime is 99665081. The reversal of 99665077 is 77056699.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 99221521 + 443556 = 9961^2 + 666^2 .

It is a cyclic number.

It is not a de Polignac number, because 99665077 - 2⁷ = 99664949 is a prime.

It is a Chen prime.

It is a self number, because there is not a number n which added to its sum of digits gives 99665077.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (99665047) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 49832538 + 49832539.

It is an arithmetic number, because the mean of its divisors is an integer number (49832539).

Almost surely, 2^99665077 is an apocalyptic number.

It is an amenable number.

99665077 is a deficient number, since it is larger than the sum of its proper divisors (1).

99665077 is an equidigital number, since it uses as much as digits as its factorization.

99665077 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 714420, while the sum is 49.

The square root of 99665077 is about 9983.2398047928. The cubic root of 99665077 is about 463.6401121492.

The spelling of 99665077 in words is "ninety-nine million, six hundred sixty-five thousand, seventy-seven".