2685247680 has 56 divisors (see below), whose sum is σ = 8525664432. Its totient is φ = 716065792.

The previous prime is 2685247679. The next prime is 2685247687. The reversal of 2685247680 is 867425862.

It is a Harshad number since it is a multiple of its sum of digits (48).

It is not an unprimeable number, because it can be changed into a prime (2685247687) 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, 1397607 + ... + 1399526.

Almost surely, 2^2685247680 is an apocalyptic number.

2685247680 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

2685247680 is an abundant number, since it is smaller than the sum of its proper divisors (5840416752).

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

2685247680 is a wasteful number, since it uses less digits than its factorization.

2685247680 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2797153 (or 2797143 counting only the distinct ones).

The product of its (nonzero) digits is 1290240, while the sum is 48.

The square root of 2685247680 is about 51819.3755269204. The cubic root of 2685247680 is about 1389.9359354908.

The spelling of 2685247680 in words is "two billion, six hundred eighty-five million, two hundred forty-seven thousand, six hundred eighty".