84625578 has 12 divisors (see below), whose sum is σ = 183355458. Its totient is φ = 28208520.

The previous prime is 84625573. The next prime is 84625603. The reversal of 84625578 is 87552648.

It can be written as a sum of positive squares in only one way, i.e., 73153809 + 11471769 = 8553^2 + 3387^2 .

It is a super-2 number, since 2×84625578² = 14322976903668168, which contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (84625571) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 2350693 + ... + 2350728.

Almost surely, 2^84625578 is an apocalyptic number.

84625578 is an abundant number, since it is smaller than the sum of its proper divisors (98729880).

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

84625578 is a wasteful number, since it uses less digits than its factorization.

84625578 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 4701429 (or 4701426 counting only the distinct ones).

The product of its digits is 537600, while the sum is 45.

The square root of 84625578 is about 9199.2161622608. The cubic root of 84625578 is about 439.0364209625.

The spelling of 84625578 in words is "eighty-four million, six hundred twenty-five thousand, five hundred seventy-eight".