671222539 has 6 divisors (see below), whose sum is σ = 726826956. Its totient is φ = 619589880.

The previous prime is 671222533. The next prime is 671222597. The reversal of 671222539 is 935222176.

It is not a de Polignac number, because 671222539 - 2¹⁷ = 671091467 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 671222498 and 671222507.

It is not an unprimeable number, because it can be changed into a prime (671222533) by changing a digit.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 1985697 + ... + 1986034.

It is an arithmetic number, because the mean of its divisors is an integer number (121137826).

Almost surely, 2^671222539 is an apocalyptic number.

671222539 is a deficient number, since it is larger than the sum of its proper divisors (55604417).

671222539 is a wasteful number, since it uses less digits than its factorization.

671222539 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3971757 (or 3971744 counting only the distinct ones).

The product of its digits is 45360, while the sum is 37.

The square root of 671222539 is about 25907.9628492863. The cubic root of 671222539 is about 875.5659094001.

The spelling of 671222539 in words is "six hundred seventy-one million, two hundred twenty-two thousand, five hundred thirty-nine".