98720685 has 24 divisors (see below), whose sum is σ = 195561600. Its totient is φ = 45129312.

The previous prime is 98720653. The next prime is 98720689. The reversal of 98720685 is 58602789.

It is not a de Polignac number, because 98720685 - 2⁵ = 98720653 is a prime.

It is a Harshad number since it is a multiple of its sum of digits (45).

It is a Curzon number.

It is a self number, because there is not a number n which added to its sum of digits gives 98720685.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (98720689) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 156385 + ... + 157014.

It is an arithmetic number, because the mean of its divisors is an integer number (8148400).

Almost surely, 2^98720685 is an apocalyptic number.

It is an amenable number.

98720685 is a deficient number, since it is larger than the sum of its proper divisors (96840915).

98720685 is a wasteful number, since it uses less digits than its factorization.

98720685 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 313417 (or 313414 counting only the distinct ones).

The product of its (nonzero) digits is 241920, while the sum is 45.

The square root of 98720685 is about 9935.8283499666. The cubic root of 98720685 is about 462.1710307347.

The spelling of 98720685 in words is "ninety-eight million, seven hundred twenty thousand, six hundred eighty-five".