81703674 has 32 divisors (see below), whose sum is σ = 195531840. Its totient is φ = 25139376.

The previous prime is 81703673. The next prime is 81703679. The reversal of 81703674 is 47630718.

It is not an unprimeable number, because it can be changed into a prime (81703673) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 57492 + ... + 58895.

It is an arithmetic number, because the mean of its divisors is an integer number (6110370).

Almost surely, 2^81703674 is an apocalyptic number.

81703674 is an abundant number, since it is smaller than the sum of its proper divisors (113828166).

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

81703674 is a wasteful number, since it uses less digits than its factorization.

81703674 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 116411 (or 116405 counting only the distinct ones).

The product of its (nonzero) digits is 28224, while the sum is 36.

The square root of 81703674 is about 9039.0084633216. The cubic root of 81703674 is about 433.9241905713.

The spelling of 81703674 in words is "eighty-one million, seven hundred three thousand, six hundred seventy-four".