2684780651 has 8 divisors (see below), whose sum is σ = 3114117120. Its totient is φ = 2266893288.

The previous prime is 2684780621. The next prime is 2684780689. The reversal of 2684780651 is 1560874862.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 2684780651 - 2²⁶ = 2617671787 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 2684780596 and 2684780605.

It is not an unprimeable number, because it can be changed into a prime (2684780621) 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, 2861771 + ... + 2862708.

It is an arithmetic number, because the mean of its divisors is an integer number (389264640).

Almost surely, 2^2684780651 is an apocalyptic number.

2684780651 is a deficient number, since it is larger than the sum of its proper divisors (429336469).

2684780651 is an equidigital number, since it uses as much as digits as its factorization.

2684780651 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 5724553.

The product of its (nonzero) digits is 645120, while the sum is 47.

The square root of 2684780651 is about 51814.8690145985. The cubic root of 2684780651 is about 1389.8553497492.

The spelling of 2684780651 in words is "two billion, six hundred eighty-four million, seven hundred eighty thousand, six hundred fifty-one".