98891687 has 2 divisors, whose sum is σ = 98891688. Its totient is φ = 98891686.

The previous prime is 98891677. The next prime is 98891717. The reversal of 98891687 is 78619889.

It is a happy number.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 98891687 - 2⁶ = 98891623 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (98891677) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 49445843 + 49445844.

It is an arithmetic number, because the mean of its divisors is an integer number (49445844).

Almost surely, 2^98891687 is an apocalyptic number.

98891687 is a deficient number, since it is larger than the sum of its proper divisors (1).

98891687 is an equidigital number, since it uses as much as digits as its factorization.

98891687 is an evil number, because the sum of its binary digits is even.

The product of its digits is 1741824, while the sum is 56.

The square root of 98891687 is about 9944.4299484686. The cubic root of 98891687 is about 462.4377312808.

The spelling of 98891687 in words is "ninety-eight million, eight hundred ninety-one thousand, six hundred eighty-seven".