84684261 has 4 divisors (see below), whose sum is σ = 112912352. Its totient is φ = 56456172.

The previous prime is 84684253. The next prime is 84684269. The reversal of 84684261 is 16248648.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is an interprime number because it is at equal distance from previous prime (84684253) and next prime (84684269).

It is not a de Polignac number, because 84684261 - 2³ = 84684253 is a prime.

It is a super-2 number, since 2×84684261² = 14342848122232242, which contains 22 as substring.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (84684269) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 14114041 + ... + 14114046.

It is an arithmetic number, because the mean of its divisors is an integer number (28228088).

Almost surely, 2^84684261 is an apocalyptic number.

It is an amenable number.

84684261 is a deficient number, since it is larger than the sum of its proper divisors (28228091).

84684261 is a wasteful number, since it uses less digits than its factorization.

84684261 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 28228090.

The product of its digits is 73728, while the sum is 39.

The square root of 84684261 is about 9202.4051747356. The cubic root of 84684261 is about 439.1378797331.

The spelling of 84684261 in words is "eighty-four million, six hundred eighty-four thousand, two hundred sixty-one".