98787678 has 16 divisors (see below), whose sum is σ = 215536896. Its totient is φ = 29935640.

The previous prime is 98787677. The next prime is 98787701. The reversal of 98787678 is 87678789.

98787678 is an esthetic number in base 10, because in such base its adjacent digits differ by 1.

It is an alternating number because its digits alternate between odd and even.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (98787677) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 748326 + ... + 748457.

It is an arithmetic number, because the mean of its divisors is an integer number (13471056).

Almost surely, 2^98787678 is an apocalyptic number.

98787678 is an abundant number, since it is smaller than the sum of its proper divisors (116749218).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

98787678 is a wasteful number, since it uses less digits than its factorization.

98787678 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1496799.

The product of its digits is 9483264, while the sum is 60.

The square root of 98787678 is about 9939.1990622987. The cubic root of 98787678 is about 462.2755519662.

Subtracting from 98787678 its reverse (87678789), we obtain a square (11108889 = 3333²).

The spelling of 98787678 in words is "ninety-eight million, seven hundred eighty-seven thousand, six hundred seventy-eight".