1679654461 has 2 divisors, whose sum is σ = 1679654462. Its totient is φ = 1679654460.

The previous prime is 1679654447. The next prime is 1679654467. The reversal of 1679654461 is 1644569761.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 1434136900 + 245517561 = 37870^2 + 15669^2 .

It is a cyclic number.

It is not a de Polignac number, because 1679654461 - 2²¹ = 1677557309 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (1679654467) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 839827230 + 839827231.

It is an arithmetic number, because the mean of its divisors is an integer number (839827231).

Almost surely, 2^1679654461 is an apocalyptic number.

It is an amenable number.

1679654461 is a deficient number, since it is larger than the sum of its proper divisors (1).

1679654461 is an equidigital number, since it uses as much as digits as its factorization.

1679654461 is an evil number, because the sum of its binary digits is even.

The product of its digits is 1088640, while the sum is 49.

The square root of 1679654461 is about 40983.5877028842. The cubic root of 1679654461 is about 1188.7028827084.

The spelling of 1679654461 in words is "one billion, six hundred seventy-nine million, six hundred fifty-four thousand, four hundred sixty-one".