71730718 has 8 divisors (see below), whose sum is σ = 113925312. Its totient is φ = 33755616.

The previous prime is 71730697. The next prime is 71730727. The reversal of 71730718 is 81703717.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a Harshad number since it is a multiple of its sum of digits (34), and also a Moran number because the ratio is a prime number: 2109727 = 71730718 / (7 + 1 + 7 + 3 + 0 + 7 + 1 + 8).

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 1054830 + ... + 1054897.

It is an arithmetic number, because the mean of its divisors is an integer number (14240664).

Almost surely, 2^71730718 is an apocalyptic number.

71730718 is a deficient number, since it is larger than the sum of its proper divisors (42194594).

71730718 is a wasteful number, since it uses less digits than its factorization.

71730718 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2109746.

The product of its (nonzero) digits is 8232, while the sum is 34.

The square root of 71730718 is about 8469.3989160979. The cubic root of 71730718 is about 415.4974786047.

The spelling of 71730718 in words is "seventy-one million, seven hundred thirty thousand, seven hundred eighteen".