84736638 has 32 divisors (see below), whose sum is σ = 215205120. Its totient is φ = 24210360.

The previous prime is 84736621. The next prime is 84736643. The reversal of 84736638 is 83663748.

84736638 is a `hidden beast` number, since 8 + 4 + 7 + 3 + 6 + 638 = 666.

It is a junction number, because it is equal to n+sod(n) for n = 84736593 and 84736602.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 111708 + ... + 112463.

It is an arithmetic number, because the mean of its divisors is an integer number (6725160).

Almost surely, 2^84736638 is an apocalyptic number.

84736638 is an abundant number, since it is smaller than the sum of its proper divisors (130468482).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

84736638 is a wasteful number, since it uses less digits than its factorization.

84736638 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 224189 (or 224183 counting only the distinct ones).

The product of its digits is 580608, while the sum is 45.

The square root of 84736638 is about 9205.2505669319. The cubic root of 84736638 is about 439.2283962947.

The spelling of 84736638 in words is "eighty-four million, seven hundred thirty-six thousand, six hundred thirty-eight".