71632369 has 2 divisors, whose sum is σ = 71632370. Its totient is φ = 71632368.

The previous prime is 71632321. The next prime is 71632409. The reversal of 71632369 is 96323617.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 71622369 + 10000 = 8463^2 + 100^2 .

It is a cyclic number.

It is not a de Polignac number, because 71632369 - 2²⁵ = 38077937 is a prime.

It is a super-2 number, since 2×71632369² = 10262392577104322, which contains 22 as substring.

It is not a weakly prime, because it can be changed into another prime (71662369) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 35816184 + 35816185.

It is an arithmetic number, because the mean of its divisors is an integer number (35816185).

Almost surely, 2^71632369 is an apocalyptic number.

It is an amenable number.

71632369 is a deficient number, since it is larger than the sum of its proper divisors (1).

71632369 is an equidigital number, since it uses as much as digits as its factorization.

71632369 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 40824, while the sum is 37.

The square root of 71632369 is about 8463.5907864216. The cubic root of 71632369 is about 415.3074974604.

The spelling of 71632369 in words is "seventy-one million, six hundred thirty-two thousand, three hundred sixty-nine".