2662261556 has 6 divisors (see below), whose sum is σ = 4658957730. Its totient is φ = 1331130776.

The previous prime is 2662261531. The next prime is 2662261643. The reversal of 2662261556 is 6551622662.

It can be written as a sum of positive squares in only one way, i.e., 2553685156 + 108576400 = 50534^2 + 10420^2 .

It is a super-2 number, since 2×2662261556² = 14175273185111082272, which contains 22 as substring.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 332782691 + ... + 332782698.

It is an arithmetic number, because the mean of its divisors is an integer number (776492955).

Almost surely, 2^2662261556 is an apocalyptic number.

It is an amenable number.

2662261556 is a deficient number, since it is larger than the sum of its proper divisors (1996696174).

2662261556 is a wasteful number, since it uses less digits than its factorization.

2662261556 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 665565393 (or 665565391 counting only the distinct ones).

The product of its digits is 259200, while the sum is 41.

The square root of 2662261556 is about 51597.1080197330. The cubic root of 2662261556 is about 1385.9585445700.

The spelling of 2662261556 in words is "two billion, six hundred sixty-two million, two hundred sixty-one thousand, five hundred fifty-six".