71656201 has 8 divisors (see below), whose sum is σ = 78707520. Its totient is φ = 64932912.

The previous prime is 71656199. The next prime is 71656217. The reversal of 71656201 is 10265617.

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

It is a cyclic number.

It is not a de Polignac number, because 71656201 - 2¹ = 71656199 is a prime.

It is a super-2 number, since 2×71656201² = 10269222283504802, which contains 22 as substring.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 71656201.

It is not an unprimeable number, because it can be changed into a prime (71656231) 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, 81550 + ... + 82423.

It is an arithmetic number, because the mean of its divisors is an integer number (9838440).

Almost surely, 2^71656201 is an apocalyptic number.

It is an amenable number.

71656201 is a deficient number, since it is larger than the sum of its proper divisors (7051319).

71656201 is a wasteful number, since it uses less digits than its factorization.

71656201 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 164015.

The product of its (nonzero) digits is 2520, while the sum is 28.

The square root of 71656201 is about 8464.9985823980. The cubic root of 71656201 is about 415.3535497827.

It can be divided in two parts, 7165 and 6201, that added together give a triangular number (13366 = T₁₆₃).

The spelling of 71656201 in words is "seventy-one million, six hundred fifty-six thousand, two hundred one".