85672261 has 4 divisors (see below), whose sum is σ = 86756800. Its totient is φ = 84587724.

The previous prime is 85672259. The next prime is 85672271. The reversal of 85672261 is 16227658.

It is a happy number.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4, and also an emirpimes, since its reverse is a distinct semiprime: 16227658 = 2 ⋅8113829.

It is a cyclic number.

It is not a de Polignac number, because 85672261 - 2¹ = 85672259 is a prime.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 85672261.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (85672241) 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 3 ways as a sum of consecutive naturals, for example, 542151 + ... + 542308.

It is an arithmetic number, because the mean of its divisors is an integer number (21689200).

Almost surely, 2^85672261 is an apocalyptic number.

It is an amenable number.

85672261 is a deficient number, since it is larger than the sum of its proper divisors (1084539).

85672261 is a wasteful number, since it uses less digits than its factorization.

85672261 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1084538.

The product of its digits is 40320, while the sum is 37.

The square root of 85672261 is about 9255.9311255000. The cubic root of 85672261 is about 440.8390686664.

The spelling of 85672261 in words is "eighty-five million, six hundred seventy-two thousand, two hundred sixty-one".