2479661 has 2 divisors, whose sum is σ = 2479662. Its totient is φ = 2479660.

The previous prime is 2479657. The next prime is 2479663. The reversal of 2479661 is 1669742.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 1612900 + 866761 = 1270^2 + 931^2 .

It is a cyclic number.

It is not a de Polignac number, because 2479661 - 2² = 2479657 is a prime.

It is a super-2 number, since 2×2479661² = 12297437349842, which contains 22 as substring.

Together with 2479663, it forms a pair of twin primes.

It is a Chen prime.

It is a zygodrome in base 3.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (2479663) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 1239830 + 1239831.

It is an arithmetic number, because the mean of its divisors is an integer number (1239831).

2^2479661 is an apocalyptic number.

It is an amenable number.

2479661 is a deficient number, since it is larger than the sum of its proper divisors (1).

2479661 is an equidigital number, since it uses as much as digits as its factorization.

2479661 is an evil number, because the sum of its binary digits is even.

The product of its digits is 18144, while the sum is 35.

The square root of 2479661 is about 1574.6939385163. The cubic root of 2479661 is about 135.3518212398.

The spelling of 2479661 in words is "two million, four hundred seventy-nine thousand, six hundred sixty-one".