2640233677 has 2 divisors, whose sum is σ = 2640233678. Its totient is φ = 2640233676.

The previous prime is 2640233639. The next prime is 2640233681. The reversal of 2640233677 is 7763320462.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 2619494761 + 20738916 = 51181^2 + 4554^2 .

It is a cyclic number.

It is not a de Polignac number, because 2640233677 - 2¹⁵ = 2640200909 is a prime.

It is a super-4 number, since 4×2640233677⁴ (a number of 39 digits) contains 4444 as substring.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (2640233377) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 1320116838 + 1320116839.

It is an arithmetic number, because the mean of its divisors is an integer number (1320116839).

Almost surely, 2^2640233677 is an apocalyptic number.

It is an amenable number.

2640233677 is a deficient number, since it is larger than the sum of its proper divisors (1).

2640233677 is an equidigital number, since it uses as much as digits as its factorization.

2640233677 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 254016, while the sum is 40.

The square root of 2640233677 is about 51383.2042305655. The cubic root of 2640233677 is about 1382.1254227529.

The spelling of 2640233677 in words is "two billion, six hundred forty million, two hundred thirty-three thousand, six hundred seventy-seven".