81114670 has 32 divisors (see below), whose sum is σ = 179702208. Its totient is φ = 25671168.

The previous prime is 81114661. The next prime is 81114679. The reversal of 81114670 is 7641118.

It is an interprime number because it is at equal distance from previous prime (81114661) and next prime (81114679).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (81114679) 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, 43659 + ... + 45478.

It is an arithmetic number, because the mean of its divisors is an integer number (5615694).

Almost surely, 2^81114670 is an apocalyptic number.

81114670 is an abundant number, since it is smaller than the sum of its proper divisors (98587538).

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

81114670 is a wasteful number, since it uses less digits than its factorization.

81114670 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 89164.

The product of its (nonzero) digits is 1344, while the sum is 28.

The square root of 81114670 is about 9006.3683024846. The cubic root of 81114670 is about 432.8789510633.

Adding to 81114670 its reverse (7641118), we get a palindrome (88755788).

The spelling of 81114670 in words is "eighty-one million, one hundred fourteen thousand, six hundred seventy".