71632145 has 16 divisors (see below), whose sum is σ = 93139200. Its totient is φ = 52572864.

The previous prime is 71632133. The next prime is 71632157. The reversal of 71632145 is 54123617.

71632145 is nontrivially palindromic in base 2 and base 4.

It is an interprime number because it is at equal distance from previous prime (71632133) and next prime (71632157).

It is a cyclic number.

It is not a de Polignac number, because 71632145 - 2⁶ = 71632081 is a prime.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 7556 + ... + 14154.

It is an arithmetic number, because the mean of its divisors is an integer number (5821200).

Almost surely, 2^71632145 is an apocalyptic number.

It is an amenable number.

71632145 is a deficient number, since it is larger than the sum of its proper divisors (21507055).

71632145 is a wasteful number, since it uses less digits than its factorization.

71632145 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 6784.

The product of its digits is 5040, while the sum is 29.

The square root of 71632145 is about 8463.5775532573. The cubic root of 71632145 is about 415.3070645603.

The spelling of 71632145 in words is "seventy-one million, six hundred thirty-two thousand, one hundred forty-five".