2642967787 has 4 divisors (see below), whose sum is σ = 2643080760. Its totient is φ = 2642854816.

The previous prime is 2642967737. The next prime is 2642967791. The reversal of 2642967787 is 7877692462.

It is a semiprime because it is the product of two primes, and also a brilliant number, because the two primes have the same length.

It is a cyclic number.

It is not a de Polignac number, because 2642967787 - 2²⁷ = 2508750059 is a prime.

It is a Smith number, since the sum of its digits (58) coincides with the sum of the digits of its prime factors. Since it is squarefree, it is also a hoax number.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (2642967737) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 6862 + ... + 73027.

It is an arithmetic number, because the mean of its divisors is an integer number (660770190).

Almost surely, 2^2642967787 is an apocalyptic number.

2642967787 is a deficient number, since it is larger than the sum of its proper divisors (112973).

2642967787 is an equidigital number, since it uses as much as digits as its factorization.

2642967787 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 112972.

The product of its digits is 14224896, while the sum is 58.

The square root of 2642967787 is about 51409.8024407797. The cubic root of 2642967787 is about 1382.6023476185.

The spelling of 2642967787 in words is "two billion, six hundred forty-two million, nine hundred sixty-seven thousand, seven hundred eighty-seven".