2086656397 has 8 divisors (see below), whose sum is σ = 2385233600. Its totient is φ = 1788200064.

The previous prime is 2086656391. The next prime is 2086656409. The reversal of 2086656397 is 7936566802.

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

It is not a de Polignac number, because 2086656397 - 2³ = 2086656389 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (2086656391) 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, 10429 + ... + 65437.

It is an arithmetic number, because the mean of its divisors is an integer number (298154200).

Almost surely, 2^2086656397 is an apocalyptic number.

It is an amenable number.

2086656397 is a deficient number, since it is larger than the sum of its proper divisors (298577203).

2086656397 is an equidigital number, since it uses as much as digits as its factorization.

2086656397 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 60435.

The product of its (nonzero) digits is 3265920, while the sum is 52.

The square root of 2086656397 is about 45679.9342928599. The cubic root of 2086656397 is about 1277.8610919317.

The spelling of 2086656397 in words is "two billion, eighty-six million, six hundred fifty-six thousand, three hundred ninety-seven".