2684415961 has 2 divisors, whose sum is σ = 2684415962. Its totient is φ = 2684415960.

The previous prime is 2684415907. The next prime is 2684415983. The reversal of 2684415961 is 1695144862.

It is a happy number.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 2061614025 + 622801936 = 45405^2 + 24956^2 .

It is a cyclic number.

It is not a de Polignac number, because 2684415961 - 2¹⁵ = 2684383193 is a prime.

It is not a weakly prime, because it can be changed into another prime (2684415661) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 1342207980 + 1342207981.

It is an arithmetic number, because the mean of its divisors is an integer number (1342207981).

Almost surely, 2^2684415961 is an apocalyptic number.

It is an amenable number.

2684415961 is a deficient number, since it is larger than the sum of its proper divisors (1).

2684415961 is an equidigital number, since it uses as much as digits as its factorization.

2684415961 is an evil number, because the sum of its binary digits is even.

The product of its digits is 414720, while the sum is 46.

The square root of 2684415961 is about 51811.3497315019. The cubic root of 2684415961 is about 1389.7924160791.

The spelling of 2684415961 in words is "two billion, six hundred eighty-four million, four hundred fifteen thousand, nine hundred sixty-one".