2661254767 has 8 divisors (see below), whose sum is σ = 2824030080. Its totient is φ = 2502401880.

The previous prime is 2661254753. The next prime is 2661254777. The reversal of 2661254767 is 7674521662.

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 2661254767 - 2¹¹ = 2661252719 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (2661254777) 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, 979209 + ... + 981922.

It is an arithmetic number, because the mean of its divisors is an integer number (353003760).

Almost surely, 2^2661254767 is an apocalyptic number.

2661254767 is a deficient number, since it is larger than the sum of its proper divisors (162775313).

2661254767 is a wasteful number, since it uses less digits than its factorization.

2661254767 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1961213.

The product of its digits is 846720, while the sum is 46.

The square root of 2661254767 is about 51587.3508430119. The cubic root of 2661254767 is about 1385.7838129592.

The spelling of 2661254767 in words is "two billion, six hundred sixty-one million, two hundred fifty-four thousand, seven hundred sixty-seven".