2640707077 has 8 divisors (see below), whose sum is σ = 2788096160. Its totient is φ = 2494158480.

The previous prime is 2640707051. The next prime is 2640707093. The reversal of 2640707077 is 7707070462.

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 2640707077 - 2⁷ = 2640706949 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 (2640707477) 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, 203658 + ... + 216235.

It is an arithmetic number, because the mean of its divisors is an integer number (348512020).

Almost surely, 2^2640707077 is an apocalyptic number.

It is an amenable number.

2640707077 is a deficient number, since it is larger than the sum of its proper divisors (147389083).

2640707077 is a wasteful number, since it uses less digits than its factorization.

2640707077 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 420243.

The product of its (nonzero) digits is 115248, while the sum is 40.

The square root of 2640707077 is about 51387.8105877260. The cubic root of 2640707077 is about 1382.2080239104.

The spelling of 2640707077 in words is "two billion, six hundred forty million, seven hundred seven thousand, seventy-seven".