84581406 has 48 divisors (see below), whose sum is σ = 225554784. Its totient is φ = 22306752.

The previous prime is 84581363. The next prime is 84581411. The reversal of 84581406 is 60418548.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 24181 + ... + 27456.

It is an arithmetic number, because the mean of its divisors is an integer number (4699058).

Almost surely, 2^84581406 is an apocalyptic number.

84581406 is an abundant number, since it is smaller than the sum of its proper divisors (140973378).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

84581406 is a wasteful number, since it uses less digits than its factorization.

84581406 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 51665 (or 51662 counting only the distinct ones).

The product of its (nonzero) digits is 30720, while the sum is 36.

The square root of 84581406 is about 9196.8149921590. The cubic root of 84581406 is about 438.9600197435.

The spelling of 84581406 in words is "eighty-four million, five hundred eighty-one thousand, four hundred six".