84312461 has 4 divisors (see below), whose sum is σ = 84507612. Its totient is φ = 84117312.

The previous prime is 84312451. The next prime is 84312463. The reversal of 84312461 is 16421348.

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 13920361 + 70392100 = 3731^2 + 8390^2 .

It is a cyclic number.

It is not a de Polignac number, because 84312461 - 2¹⁴ = 84296077 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 (84312463) 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, 96926 + ... + 97791.

It is an arithmetic number, because the mean of its divisors is an integer number (21126903).

Almost surely, 2^84312461 is an apocalyptic number.

It is an amenable number.

84312461 is a deficient number, since it is larger than the sum of its proper divisors (195151).

84312461 is a wasteful number, since it uses less digits than its factorization.

84312461 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 195150.

The product of its digits is 4608, while the sum is 29.

The square root of 84312461 is about 9182.1817124254. The cubic root of 84312461 is about 438.4942694170.

The spelling of 84312461 in words is "eighty-four million, three hundred twelve thousand, four hundred sixty-one".