98851565 has 4 divisors (see below), whose sum is σ = 118621884. Its totient is φ = 79081248.

The previous prime is 98851561. The next prime is 98851607. The reversal of 98851565 is 56515889.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in 2 ways, for example, as 21921124 + 76930441 = 4682^2 + 8771^2 .

It is a cyclic number.

It is not a de Polignac number, because 98851565 - 2² = 98851561 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 (98851561) 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, 9885152 + ... + 9885161.

It is an arithmetic number, because the mean of its divisors is an integer number (29655471).

Almost surely, 2^98851565 is an apocalyptic number.

It is an amenable number.

98851565 is a deficient number, since it is larger than the sum of its proper divisors (19770319).

98851565 is a wasteful number, since it uses less digits than its factorization.

98851565 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 19770318.

The product of its digits is 432000, while the sum is 47.

The square root of 98851565 is about 9942.4124336099. The cubic root of 98851565 is about 462.3751832649.

The spelling of 98851565 in words is "ninety-eight million, eight hundred fifty-one thousand, five hundred sixty-five".