84670261 has 8 divisors (see below), whose sum is σ = 91498680. Its totient is φ = 77886912.

The previous prime is 84670259. The next prime is 84670283. The reversal of 84670261 is 16207648.

It can be written as a sum of positive squares in 4 ways, for example, as 10176100 + 74494161 = 3190^2 + 8631^2 .

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

It is a cyclic number.

It is not a de Polignac number, because 84670261 - 2¹ = 84670259 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (84670361) 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, 7306 + ... + 14923.

It is an arithmetic number, because the mean of its divisors is an integer number (11437335).

Almost surely, 2^84670261 is an apocalyptic number.

It is an amenable number.

84670261 is a deficient number, since it is larger than the sum of its proper divisors (6828419).

84670261 is a wasteful number, since it uses less digits than its factorization.

84670261 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 22535.

The product of its (nonzero) digits is 16128, while the sum is 34.

The square root of 84670261 is about 9201.6444725929. The cubic root of 84670261 is about 439.1136789782.

The spelling of 84670261 in words is "eighty-four million, six hundred seventy thousand, two hundred sixty-one".