71172607 has 8 divisors (see below), whose sum is σ = 77847120. Its totient is φ = 64532160.

The previous prime is 71172593. The next prime is 71172631. The reversal of 71172607 is 70627117.

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

It is a de Polignac number, because none of the positive numbers 2^k-71172607 is a prime.

It is a super-3 number, since 3×71172607³ (a number of 25 digits) contains 333 as substring.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (71172637) 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, 4038 + ... + 12595.

It is an arithmetic number, because the mean of its divisors is an integer number (9730890).

Almost surely, 2^71172607 is an apocalyptic number.

71172607 is a deficient number, since it is larger than the sum of its proper divisors (6674513).

71172607 is a wasteful number, since it uses less digits than its factorization.

71172607 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 17033.

The product of its (nonzero) digits is 4116, while the sum is 31.

The square root of 71172607 is about 8436.3858968162. The cubic root of 71172607 is about 414.4170593166.

Subtracting from 71172607 its reverse (70627117), we obtain a triangular number (545490 = T₁₀₄₄).

The spelling of 71172607 in words is "seventy-one million, one hundred seventy-two thousand, six hundred seven".