84997558 has 16 divisors (see below), whose sum is σ = 133436160. Its totient is φ = 40529896.

The previous prime is 84997537. The next prime is 84997559. The reversal of 84997558 is 85579948.

It is a junction number, because it is equal to n+sod(n) for n = 84997499 and 84997508.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (84997559) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 13941 + ... + 19087.

It is an arithmetic number, because the mean of its divisors is an integer number (8339760).

Almost surely, 2^84997558 is an apocalyptic number.

84997558 is a deficient number, since it is larger than the sum of its proper divisors (48438602).

84997558 is a wasteful number, since it uses less digits than its factorization.

84997558 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 5531.

The product of its digits is 3628800, while the sum is 55.

The square root of 84997558 is about 9219.4120202972. The cubic root of 84997558 is about 439.6787565645.

The spelling of 84997558 in words is "eighty-four million, nine hundred ninety-seven thousand, five hundred fifty-eight".