71207473 has 4 divisors (see below), whose sum is σ = 71288640. Its totient is φ = 71126308.

The previous prime is 71207449. The next prime is 71207483. The reversal of 71207473 is 37470217.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4, and also an emirpimes, since its reverse is a distinct semiprime: 37470217 = 2699 ⋅13883.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-71207473 is a prime.

It is a super-2 number, since 2×71207473² = 10141008422091458, which contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (71207413) 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, 39253 + ... + 41026.

It is an arithmetic number, because the mean of its divisors is an integer number (17822160).

Almost surely, 2^71207473 is an apocalyptic number.

It is an amenable number.

71207473 is a deficient number, since it is larger than the sum of its proper divisors (81167).

71207473 is an equidigital number, since it uses as much as digits as its factorization.

71207473 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 81166.

The product of its (nonzero) digits is 8232, while the sum is 31.

The square root of 71207473 is about 8438.4520499912. The cubic root of 71207473 is about 414.4847197410.

The spelling of 71207473 in words is "seventy-one million, two hundred seven thousand, four hundred seventy-three".