2697679780 has 24 divisors (see below), whose sum is σ = 5670762552. Its totient is φ = 1077998592.

The previous prime is 2697679763. The next prime is 2697679813. The reversal of 2697679780 is 879767962.

It can be written as a sum of positive squares in 4 ways, for example, as 200279104 + 2497400676 = 14152^2 + 49974^2 .

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 46317 + ... + 86836.

It is an arithmetic number, because the mean of its divisors is an integer number (236281773).

Almost surely, 2^2697679780 is an apocalyptic number.

2697679780 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

2697679780 is an abundant number, since it is smaller than the sum of its proper divisors (2973082772).

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

2697679780 is a wasteful number, since it uses less digits than its factorization.

2697679780 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 134175 (or 134173 counting only the distinct ones).

The product of its (nonzero) digits is 16003008, while the sum is 61.

The square root of 2697679780 is about 51939.1931011640. The cubic root of 2697679780 is about 1392.0776651353.

The spelling of 2697679780 in words is "two billion, six hundred ninety-seven million, six hundred seventy-nine thousand, seven hundred eighty".