2656279001 has 4 divisors (see below), whose sum is σ = 2660423604. Its totient is φ = 2652134400.

The previous prime is 2656278997. The next prime is 2656279007. The reversal of 2656279001 is 1009726562.

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 2443819225 + 212459776 = 49435^2 + 14576^2 .

It is a cyclic number.

It is not a de Polignac number, because 2656279001 - 2² = 2656278997 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (2656279007) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 2071340 + ... + 2072621.

It is an arithmetic number, because the mean of its divisors is an integer number (665105901).

Almost surely, 2^2656279001 is an apocalyptic number.

It is an amenable number.

2656279001 is a deficient number, since it is larger than the sum of its proper divisors (4144603).

2656279001 is an equidigital number, since it uses as much as digits as its factorization.

2656279001 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4144602.

The product of its (nonzero) digits is 45360, while the sum is 38.

The square root of 2656279001 is about 51539.1016704793. The cubic root of 2656279001 is about 1384.9196043469.

The spelling of 2656279001 in words is "two billion, six hundred fifty-six million, two hundred seventy-nine thousand, one".