98691687 has 12 divisors (see below), whose sum is σ = 142767144. Its totient is φ = 65696400.

The previous prime is 98691683. The next prime is 98691701. The reversal of 98691687 is 78619689.

It is not a de Polignac number, because 98691687 - 2² = 98691683 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (98691683) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 1513 + ... + 14130.

It is an arithmetic number, because the mean of its divisors is an integer number (11897262).

Almost surely, 2^98691687 is an apocalyptic number.

98691687 is a deficient number, since it is larger than the sum of its proper divisors (44075457).

98691687 is a wasteful number, since it uses less digits than its factorization.

98691687 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 16350 (or 16347 counting only the distinct ones).

The product of its digits is 1306368, while the sum is 54.

The square root of 98691687 is about 9934.3689784505. The cubic root of 98691687 is about 462.1257739310.

The spelling of 98691687 in words is "ninety-eight million, six hundred ninety-one thousand, six hundred eighty-seven".