84654981 has 12 divisors (see below), whose sum is σ = 122365152. Its totient is φ = 56397096.

The previous prime is 84654971. The next prime is 84654989. The reversal of 84654981 is 18945648.

It is not a de Polignac number, because 84654981 - 2⁹ = 84654469 is a prime.

It is a super-2 number, since 2×84654981² = 14332931616220722, which contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (84654989) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 16530 + ... + 21036.

It is an arithmetic number, because the mean of its divisors is an integer number (10197096).

Almost surely, 2^84654981 is an apocalyptic number.

It is an amenable number.

84654981 is a deficient number, since it is larger than the sum of its proper divisors (37710171).

84654981 is a wasteful number, since it uses less digits than its factorization.

84654981 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 6600 (or 6597 counting only the distinct ones).

The product of its digits is 276480, while the sum is 45.

The square root of 84654981 is about 9200.8141487588. The cubic root of 84654981 is about 439.0872625379.

The spelling of 84654981 in words is "eighty-four million, six hundred fifty-four thousand, nine hundred eighty-one".