99680767 has 2 divisors, whose sum is σ = 99680768. Its totient is φ = 99680766.

The previous prime is 99680753. The next prime is 99680773. The reversal of 99680767 is 76708699.

It is a strong prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-99680767 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (99681767) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 49840383 + 49840384.

It is an arithmetic number, because the mean of its divisors is an integer number (49840384).

Almost surely, 2^99680767 is an apocalyptic number.

99680767 is a deficient number, since it is larger than the sum of its proper divisors (1).

99680767 is an equidigital number, since it uses as much as digits as its factorization.

99680767 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 1143072, while the sum is 52.

The square root of 99680767 is about 9984.0255909127. The cubic root of 99680767 is about 463.6644407367.

The spelling of 99680767 in words is "ninety-nine million, six hundred eighty thousand, seven hundred sixty-seven".