2640241777 has 8 divisors (see below), whose sum is σ = 2657523456. Its totient is φ = 2622977952.

The previous prime is 2640241757. The next prime is 2640241823. The reversal of 2640241777 is 7771420462.

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 2640241777 - 2⁷ = 2640241649 is a prime.

It is a super-2 number, since 2×2640241777² = 13941753282032235458, which contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (2640241717) 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, 421573 + ... + 427789.

It is an arithmetic number, because the mean of its divisors is an integer number (332190432).

Almost surely, 2^2640241777 is an apocalyptic number.

It is an amenable number.

2640241777 is a deficient number, since it is larger than the sum of its proper divisors (17281679).

2640241777 is a wasteful number, since it uses less digits than its factorization.

2640241777 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 8927.

The product of its (nonzero) digits is 131712, while the sum is 40.

The square root of 2640241777 is about 51383.2830500349. The cubic root of 2640241777 is about 1382.1268361637.

The spelling of 2640241777 in words is "two billion, six hundred forty million, two hundred forty-one thousand, seven hundred seventy-seven".