84674598121 has 9 divisors (see below), whose sum is σ = 89953703749. Its totient is φ = 79689083584.

The previous prime is 84674598103. The next prime is 84674598163. The reversal of 84674598121 is 12189547648.

The square root of 84674598121 is 290989.

It is a perfect power (a square), and thus also a powerful number.

It can be written as a sum of positive squares in 4 ways, for example, as 16522274521 + 68152323600 = 128539^2 + 261060^2 .

It is not a de Polignac number, because 84674598121 - 2⁵ = 84674598089 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (84674595121) by changing a digit.

It is a polite number, since it can be written in 8 ways as a sum of consecutive naturals, for example, 4938255 + ... + 4955371.

Almost surely, 2^84674598121 is an apocalyptic number.

84674598121 is the 290989-th square number.

84674598121 is the 145495-th centered octagonal number.

It is an amenable number.

84674598121 is a deficient number, since it is larger than the sum of its proper divisors (5279105628).

84674598121 is an frugal number, since it uses more digits than its factorization.

84674598121 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 34268 (or 17134 counting only the distinct ones).

The product of its digits is 3870720, while the sum is 55.

The spelling of 84674598121 in words is "eighty-four billion, six hundred seventy-four million, five hundred ninety-eight thousand, one hundred twenty-one".