86672645 has 8 divisors (see below), whose sum is σ = 105037560. Its totient is φ = 68651200.

The previous prime is 86672617. The next prime is 86672657. The reversal of 86672645 is 54627668.

It can be written as a sum of positive squares in 4 ways, for example, as 38217124 + 48455521 = 6182^2 + 6961^2 .

It is a sphenic number, since it is the product of 3 distinct primes.

It is not a de Polignac number, because 86672645 - 2⁶ = 86672581 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 86672596 and 86672605.

It is a congruent number.

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, 85310 + ... + 86319.

It is an arithmetic number, because the mean of its divisors is an integer number (13129695).

Almost surely, 2^86672645 is an apocalyptic number.

It is an amenable number.

86672645 is a deficient number, since it is larger than the sum of its proper divisors (18364915).

86672645 is a wasteful number, since it uses less digits than its factorization.

86672645 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 171735.

The product of its digits is 483840, while the sum is 44.

The square root of 86672645 is about 9309.8144449822. The cubic root of 86672645 is about 442.5483067269.

The spelling of 86672645 in words is "eighty-six million, six hundred seventy-two thousand, six hundred forty-five".