83672578 has 16 divisors (see below), whose sum is σ = 137083104. Its totient is φ = 37987360.

The previous prime is 83672557. The next prime is 83672581. The reversal of 83672578 is 87527638.

It is a super-3 number, since 3×83672578³ (a number of 25 digits) contains 333 as substring. Note that it is a super-d number also for d = 2.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 22401 + ... + 25867.

It is an arithmetic number, because the mean of its divisors is an integer number (8567694).

Almost surely, 2^83672578 is an apocalyptic number.

83672578 is a deficient number, since it is larger than the sum of its proper divisors (53410526).

83672578 is a wasteful number, since it uses less digits than its factorization.

83672578 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4577.

The product of its digits is 564480, while the sum is 46.

The square root of 83672578 is about 9147.2716150774. The cubic root of 83672578 is about 437.3821449077.

The spelling of 83672578 in words is "eighty-three million, six hundred seventy-two thousand, five hundred seventy-eight".