2987646669 has 72 divisors (see below), whose sum is σ = 5246422272. Its totient is φ = 1631629440.

The previous prime is 2987646667. The next prime is 2987646689. The reversal of 2987646669 is 9666467892.

It is not a de Polignac number, because 2987646669 - 2¹ = 2987646667 is a prime.

It is a super-2 number, since 2×2987646669² = 17852065237573591122, which contains 22 as substring.

It is a Harshad number since it is a multiple of its sum of digits (63).

It is a Curzon number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (2987646667) by changing a digit.

It is a polite number, since it can be written in 71 ways as a sum of consecutive naturals, for example, 1133377 + ... + 1136009.

It is an arithmetic number, because the mean of its divisors is an integer number (72866976).

Almost surely, 2^2987646669 is an apocalyptic number.

It is an amenable number.

2987646669 is a deficient number, since it is larger than the sum of its proper divisors (2258775603).

2987646669 is a wasteful number, since it uses less digits than its factorization.

2987646669 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2767 (or 2757 counting only the distinct ones).

The product of its digits is 47029248, while the sum is 63.

The square root of 2987646669 is about 54659.3694530041. The cubic root of 2987646669 is about 1440.2672261591.

The spelling of 2987646669 in words is "two billion, nine hundred eighty-seven million, six hundred forty-six thousand, six hundred sixty-nine".