98761645 has 4 divisors (see below), whose sum is σ = 118513980. Its totient is φ = 79009312.

The previous prime is 98761643. The next prime is 98761651. The reversal of 98761645 is 54616789.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 54616789 = 23 ⋅2374643.

It can be written as a sum of positive squares in 2 ways, for example, as 50722884 + 48038761 = 7122^2 + 6931^2 .

It is a cyclic number.

It is not a de Polignac number, because 98761645 - 2¹ = 98761643 is a prime.

It is a super-3 number, since 3×98761645³ (a number of 25 digits) contains 333 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 98761595 and 98761604.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (98761643) 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, 9876160 + ... + 9876169.

It is an arithmetic number, because the mean of its divisors is an integer number (29628495).

Almost surely, 2^98761645 is an apocalyptic number.

It is an amenable number.

98761645 is a deficient number, since it is larger than the sum of its proper divisors (19752335).

98761645 is a wasteful number, since it uses less digits than its factorization.

98761645 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 19752334.

The product of its digits is 362880, while the sum is 46.

The square root of 98761645 is about 9937.8893634413. The cubic root of 98761645 is about 462.2349413794.

The spelling of 98761645 in words is "ninety-eight million, seven hundred sixty-one thousand, six hundred forty-five".