5640885479 has 2 divisors, whose sum is σ = 5640885480. Its totient is φ = 5640885478.

The previous prime is 5640885473. The next prime is 5640885521. The reversal of 5640885479 is 9745880465.

It is a happy number.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 5640885479 - 2⁴ = 5640885463 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (5640885473) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 2820442739 + 2820442740.

It is an arithmetic number, because the mean of its divisors is an integer number (2820442740).

Almost surely, 2^5640885479 is an apocalyptic number.

5640885479 is a deficient number, since it is larger than the sum of its proper divisors (1).

5640885479 is an equidigital number, since it uses as much as digits as its factorization.

5640885479 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 9676800, while the sum is 56.

The square root of 5640885479 is about 75105.8285288166. The cubic root of 5640885479 is about 1780.1192403182.

The spelling of 5640885479 in words is "five billion, six hundred forty million, eight hundred eighty-five thousand, four hundred seventy-nine".