2656279974 has 16 divisors (see below), whose sum is σ = 5387385600. Its totient is φ = 872955720.

The previous prime is 2656279973. The next prime is 2656279991. The reversal of 2656279974 is 4799726562.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (2656279973) 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, 3117274 + ... + 3118125.

It is an arithmetic number, because the mean of its divisors is an integer number (336711600).

Almost surely, 2^2656279974 is an apocalyptic number.

2656279974 is an abundant number, since it is smaller than the sum of its proper divisors (2731105626).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

2656279974 is a wasteful number, since it uses less digits than its factorization.

2656279974 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 6235475.

The product of its digits is 11430720, while the sum is 57.

The square root of 2656279974 is about 51539.1111099134. Note that the first 4 decimals coincide. The cubic root of 2656279974 is about 1384.9197734464.

The spelling of 2656279974 in words is "two billion, six hundred fifty-six million, two hundred seventy-nine thousand, nine hundred seventy-four".