5661679319 has 2 divisors, whose sum is σ = 5661679320. Its totient is φ = 5661679318.

The previous prime is 5661679307. The next prime is 5661679339. The reversal of 5661679319 is 9139761665.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 5661679319 - 2⁸ = 5661679063 is a prime.

It is a super-2 number, since 2×5661679319² = 64109225422384607522, which contains 22 as substring.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (5661679339) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 2830839659 + 2830839660.

It is an arithmetic number, because the mean of its divisors is an integer number (2830839660).

Almost surely, 2^5661679319 is an apocalyptic number.

5661679319 is a deficient number, since it is larger than the sum of its proper divisors (1).

5661679319 is an equidigital number, since it uses as much as digits as its factorization.

5661679319 is an evil number, because the sum of its binary digits is even.

The product of its digits is 1837080, while the sum is 53.

The square root of 5661679319 is about 75244.1314588719. The cubic root of 5661679319 is about 1782.3038928656.

The spelling of 5661679319 in words is "five billion, six hundred sixty-one million, six hundred seventy-nine thousand, three hundred nineteen".