83647265 has 8 divisors (see below), whose sum is σ = 108098088. Its totient is φ = 61770240.

The previous prime is 83647261. The next prime is 83647313. The reversal of 83647265 is 56274638.

It is a happy number.

It can be written as a sum of positive squares in 4 ways, for example, as 1364224 + 82283041 = 1168^2 + 9071^2 .

It is a sphenic number, since it is the product of 3 distinct primes.

It is not a de Polignac number, because 83647265 - 2² = 83647261 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (83647261) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 643376 + ... + 643505.

It is an arithmetic number, because the mean of its divisors is an integer number (13512261).

Almost surely, 2^83647265 is an apocalyptic number.

It is an amenable number.

83647265 is a deficient number, since it is larger than the sum of its proper divisors (24450823).

83647265 is a wasteful number, since it uses less digits than its factorization.

83647265 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1286899.

The product of its digits is 241920, while the sum is 41.

The square root of 83647265 is about 9145.8878737933. The cubic root of 83647265 is about 437.3380341961.

The spelling of 83647265 in words is "eighty-three million, six hundred forty-seven thousand, two hundred sixty-five".