71822365 has 32 divisors (see below), whose sum is σ = 96181344. Its totient is φ = 51240960.

The previous prime is 71822351. The next prime is 71822371. The reversal of 71822365 is 56322817.

71822365 = T₁₄₂ + T₁₄₃ + ... + T₇₅₆.

It is a happy number.

It can be written as a sum of positive squares in 16 ways, for example, as 23755876 + 48066489 = 4874^2 + 6933^2 .

It is not a de Polignac number, because 71822365 - 2¹¹ = 71820317 is a prime.

It is a super-2 number, since 2×71822365² = 10316904228386450, 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 71822365.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 128667 + ... + 129223.

It is an arithmetic number, because the mean of its divisors is an integer number (3005667).

Almost surely, 2^71822365 is an apocalyptic number.

It is an amenable number.

71822365 is a deficient number, since it is larger than the sum of its proper divisors (24358979).

71822365 is a wasteful number, since it uses less digits than its factorization.

71822365 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 657.

The product of its digits is 20160, while the sum is 34.

The square root of 71822365 is about 8474.8076674341. The cubic root of 71822365 is about 415.6743572266.

The spelling of 71822365 in words is "seventy-one million, eight hundred twenty-two thousand, three hundred sixty-five".