2987606281 has 9 divisors (see below), whose sum is σ = 3284558823. Its totient is φ = 2715459120.

The previous prime is 2987606273. The next prime is 2987606309. The reversal of 2987606281 is 1826067892.

The square root of 2987606281 is 54659.

It is a perfect power (a square), and thus also a powerful number.

It can be written as a sum of positive squares in only one way, i.e., 602260681 + 2385345600 = 24541^2 + 48840^2 .

It is not a de Polignac number, because 2987606281 - 2³ = 2987606273 is a prime.

It is a super-2 number, since 2×2987606281² = 17851582580541301922, which contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (2987606221) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 8 ways as a sum of consecutive naturals, for example, 598765 + ... + 603733.

Almost surely, 2^2987606281 is an apocalyptic number.

2987606281 is the 54659-th square number.

2987606281 is the 27330-th centered octagonal number.

It is an amenable number.

2987606281 is a deficient number, since it is larger than the sum of its proper divisors (296952542).

2987606281 is an frugal number, since it uses more digits than its factorization.

2987606281 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 9960 (or 4980 counting only the distinct ones).

The product of its (nonzero) digits is 580608, while the sum is 49.

The cubic root of 2987606281 is about 1440.2607361263.

Multiplying 2987606281 by its sum of digits (49), we get a square (146392707769 = 382613²).

The spelling of 2987606281 in words is "two billion, nine hundred eighty-seven million, six hundred six thousand, two hundred eighty-one".