2631724085 has 4 divisors (see below), whose sum is σ = 3158068908. Its totient is φ = 2105379264.

The previous prime is 2631724001. The next prime is 2631724091. The reversal of 2631724085 is 5804271362.

It is a happy number.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in 2 ways, for example, as 1653723556 + 978000529 = 40666^2 + 31273^2 .

It is a cyclic number.

It is not a de Polignac number, because 2631724085 - 2²² = 2627529781 is a prime.

It is a Duffinian number.

It is a Curzon number.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 263172404 + ... + 263172413.

It is an arithmetic number, because the mean of its divisors is an integer number (789517227).

Almost surely, 2^2631724085 is an apocalyptic number.

It is an amenable number.

2631724085 is a deficient number, since it is larger than the sum of its proper divisors (526344823).

2631724085 is an equidigital number, since it uses as much as digits as its factorization.

2631724085 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 526344822.

The product of its (nonzero) digits is 80640, while the sum is 38.

The square root of 2631724085 is about 51300.3322114000. The cubic root of 2631724085 is about 1380.6389404546.

The spelling of 2631724085 in words is "two billion, six hundred thirty-one million, seven hundred twenty-four thousand, eighty-five".