84070261 has 16 divisors (see below), whose sum is σ = 93744000. Its totient is φ = 74750400.

The previous prime is 84070247. The next prime is 84070271. The reversal of 84070261 is 16207048.

It is a cyclic number.

It is not a de Polignac number, because 84070261 - 2¹⁷ = 83939189 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (84070211) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 234000 + ... + 234358.

It is an arithmetic number, because the mean of its divisors is an integer number (5859000).

Almost surely, 2^84070261 is an apocalyptic number.

It is an amenable number.

84070261 is a deficient number, since it is larger than the sum of its proper divisors (9673739).

84070261 is a wasteful number, since it uses less digits than its factorization.

84070261 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 780.

The product of its (nonzero) digits is 2688, while the sum is 28.

The square root of 84070261 is about 9168.9836405133. The cubic root of 84070261 is about 438.0739868620.

The spelling of 84070261 in words is "eighty-four million, seventy thousand, two hundred sixty-one".