81079754 has 16 divisors (see below), whose sum is σ = 140755200. Its totient is φ = 34308144.

The previous prime is 81079753. The next prime is 81079861. The reversal of 81079754 is 45797018.

It is not an unprimeable number, because it can be changed into a prime (81079753) 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, 35549 + ... + 37760.

It is an arithmetic number, because the mean of its divisors is an integer number (8797200).

Almost surely, 2^81079754 is an apocalyptic number.

81079754 is a deficient number, since it is larger than the sum of its proper divisors (59675446).

81079754 is a wasteful number, since it uses less digits than its factorization.

81079754 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 73397.

The product of its (nonzero) digits is 70560, while the sum is 41.

The square root of 81079754 is about 9004.4296876593. The cubic root of 81079754 is about 432.8168308959.

The spelling of 81079754 in words is "eighty-one million, seventy-nine thousand, seven hundred fifty-four".