2649689712 has 80 divisors (see below), whose sum is σ = 7613084160. Its totient is φ = 882360000.

The previous prime is 2649689671. The next prime is 2649689767. The reversal of 2649689712 is 2179869462.

2649689712 is a `hidden beast` number, since 2 + 6 + 496 + 89 + 71 + 2 = 666.

It is a Harshad number since it is a multiple of its sum of digits (54).

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 555337 + ... + 560087.

It is an arithmetic number, because the mean of its divisors is an integer number (95163552).

Almost surely, 2^2649689712 is an apocalyptic number.

It is an amenable number.

2649689712 is an abundant number, since it is smaller than the sum of its proper divisors (4963394448).

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

2649689712 is a wasteful number, since it uses less digits than its factorization.

2649689712 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 6059 (or 6047 counting only the distinct ones).

The product of its digits is 2612736, while the sum is 54.

The square root of 2649689712 is about 51475.1368332324. The cubic root of 2649689712 is about 1383.7734908359.

The spelling of 2649689712 in words is "two billion, six hundred forty-nine million, six hundred eighty-nine thousand, seven hundred twelve".