84012861 has 8 divisors (see below), whose sum is σ = 118606464. Its totient is φ = 52713920.

The previous prime is 84012811. The next prime is 84012871. The reversal of 84012861 is 16821048.

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 84012861 - 2⁹ = 84012349 is a prime.

It is a Curzon number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (84012811) 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, 823605 + ... + 823706.

It is an arithmetic number, because the mean of its divisors is an integer number (14825808).

Almost surely, 2^84012861 is an apocalyptic number.

It is an amenable number.

84012861 is a deficient number, since it is larger than the sum of its proper divisors (34593603).

84012861 is a wasteful number, since it uses less digits than its factorization.

84012861 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1647331.

The product of its (nonzero) digits is 3072, while the sum is 30.

The square root of 84012861 is about 9165.8529881294. The cubic root of 84012861 is about 437.9742640369.

The spelling of 84012861 in words is "eighty-four million, twelve thousand, eight hundred sixty-one".