71730007 has 4 divisors (see below), whose sum is σ = 72159696. Its totient is φ = 71300320.

The previous prime is 71729927. The next prime is 71730023. The reversal of 71730007 is 70003717.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is not a de Polignac number, because 71730007 - 2¹¹ = 71727959 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (71730047) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 214594 + ... + 214927.

It is an arithmetic number, because the mean of its divisors is an integer number (18039924).

Almost surely, 2^71730007 is an apocalyptic number.

71730007 is a deficient number, since it is larger than the sum of its proper divisors (429689).

71730007 is a wasteful number, since it uses less digits than its factorization.

71730007 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 429688.

The product of its (nonzero) digits is 1029, while the sum is 25.

The square root of 71730007 is about 8469.3569413504. The cubic root of 71730007 is about 415.4961057866.

The spelling of 71730007 in words is "seventy-one million, seven hundred thirty thousand, seven".