98690545 has 4 divisors (see below), whose sum is σ = 118428660. Its totient is φ = 78952432.

The previous prime is 98690533. The next prime is 98690551. The reversal of 98690545 is 54509689.

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 67765824 + 30924721 = 8232^2 + 5561^2 .

It is a cyclic number.

It is not a de Polignac number, because 98690545 - 2¹¹ = 98688497 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 98690495 and 98690504.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 9869050 + ... + 9869059.

It is an arithmetic number, because the mean of its divisors is an integer number (29607165).

Almost surely, 2^98690545 is an apocalyptic number.

It is an amenable number.

98690545 is a deficient number, since it is larger than the sum of its proper divisors (19738115).

98690545 is a wasteful number, since it uses less digits than its factorization.

98690545 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 19738114.

The product of its (nonzero) digits is 388800, while the sum is 46.

The square root of 98690545 is about 9934.3115010553. The cubic root of 98690545 is about 462.1239914449.

It can be divided in two parts, 98690 and 545, that added together give a triangular number (99235 = T₄₄₅).

The spelling of 98690545 in words is "ninety-eight million, six hundred ninety thousand, five hundred forty-five".