985654521 has 8 divisors (see below), whose sum is σ = 1460228960. Its totient is φ = 657102996.

The previous prime is 985654499. The next prime is 985654547. The reversal of 985654521 is 125456589.

985654521 is a `hidden beast` number, since 9 + 85 + 6 + 545 + 21 = 666.

It is not a de Polignac number, because 985654521 - 2¹⁹ = 985130233 is a prime.

It is an alternating number because its digits alternate between odd and even.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (985654561) by changing a digit.

It is an upside-down number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 18252835 + ... + 18252888.

It is an arithmetic number, because the mean of its divisors is an integer number (182528620).

Almost surely, 2^985654521 is an apocalyptic number.

It is an amenable number.

985654521 is a deficient number, since it is larger than the sum of its proper divisors (474574439).

985654521 is a wasteful number, since it uses less digits than its factorization.

985654521 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 36505732 (or 36505726 counting only the distinct ones).

The product of its digits is 432000, while the sum is 45.

The square root of 985654521 is about 31395.1353078785. The cubic root of 985654521 is about 995.1951238079.

The spelling of 985654521 in words is "nine hundred eighty-five million, six hundred fifty-four thousand, five hundred twenty-one".