84684157 has 32 divisors (see below), whose sum is σ = 98233344. Its totient is φ = 72576000.

The previous prime is 84684109. The next prime is 84684167. The reversal of 84684157 is 75148648.

It is a cyclic number.

It is not a de Polignac number, because 84684157 - 2⁷ = 84684029 is a prime.

It is a Harshad number since it is a multiple of its sum of digits (43).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (84684107) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 838407 + ... + 838507.

It is an arithmetic number, because the mean of its divisors is an integer number (3069792).

Almost surely, 2^84684157 is an apocalyptic number.

It is an amenable number.

84684157 is a deficient number, since it is larger than the sum of its proper divisors (13549187).

84684157 is a wasteful number, since it uses less digits than its factorization.

84684157 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 229.

The product of its digits is 215040, while the sum is 43.

The square root of 84684157 is about 9202.3995240372. The cubic root of 84684157 is about 439.1376999659.

The spelling of 84684157 in words is "eighty-four million, six hundred eighty-four thousand, one hundred fifty-seven".