71632573 has 4 divisors (see below), whose sum is σ = 71668800. Its totient is φ = 71596348.

The previous prime is 71632567. The next prime is 71632579. The reversal of 71632573 is 37523617.

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: 37523617 = 269 ⋅139493.

It is an interprime number because it is at equal distance from previous prime (71632567) and next prime (71632579).

It is a cyclic number.

It is not a de Polignac number, because 71632573 - 2⁹ = 71632061 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 (71632579) 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, 14965 + ... + 19162.

It is an arithmetic number, because the mean of its divisors is an integer number (17917200).

Almost surely, 2^71632573 is an apocalyptic number.

It is an amenable number.

71632573 is a deficient number, since it is larger than the sum of its proper divisors (36227).

71632573 is a wasteful number, since it uses less digits than its factorization.

71632573 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 36226.

The product of its digits is 26460, while the sum is 34.

The square root of 71632573 is about 8463.6028380353. The cubic root of 71632573 is about 415.3078917079.

The spelling of 71632573 in words is "seventy-one million, six hundred thirty-two thousand, five hundred seventy-three".