84681724 has 6 divisors (see below), whose sum is σ = 148193024. Its totient is φ = 42340860.

The previous prime is 84681713. The next prime is 84681781. The reversal of 84681724 is 42718648.

It is a super-2 number, since 2×84681724² = 14341988759224352, which contains 22 as substring.

It is a congruent number.

It is an unprimeable number.

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 as a sum of consecutive naturals, namely, 10585212 + ... + 10585219.

Almost surely, 2^84681724 is an apocalyptic number.

It is an amenable number.

84681724 is a deficient number, since it is larger than the sum of its proper divisors (63511300).

84681724 is a wasteful number, since it uses less digits than its factorization.

84681724 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 21170435 (or 21170433 counting only the distinct ones).

The product of its digits is 86016, while the sum is 40.

The square root of 84681724 is about 9202.2673293053. The cubic root of 84681724 is about 439.1334944085.

The spelling of 84681724 in words is "eighty-four million, six hundred eighty-one thousand, seven hundred twenty-four".