98780807 has 4 divisors (see below), whose sum is σ = 99298176. Its totient is φ = 98263440.

The previous prime is 98780797. The next prime is 98780813. The reversal of 98780807 is 70808789.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 70808789 = 23 ⋅3078643.

It is a cyclic number.

It is not a de Polignac number, because 98780807 - 2⁶ = 98780743 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (98780827) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 258398 + ... + 258779.

It is an arithmetic number, because the mean of its divisors is an integer number (24824544).

Almost surely, 2^98780807 is an apocalyptic number.

98780807 is a deficient number, since it is larger than the sum of its proper divisors (517369).

98780807 is a wasteful number, since it uses less digits than its factorization.

98780807 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 517368.

The product of its (nonzero) digits is 225792, while the sum is 47.

The square root of 98780807 is about 9938.8534046941. The cubic root of 98780807 is about 462.2648341351.

The spelling of 98780807 in words is "ninety-eight million, seven hundred eighty thousand, eight hundred seven".