2646562 has 4 divisors (see below), whose sum is σ = 3969846. Its totient is φ = 1323280.

The previous prime is 2646551. The next prime is 2646571. The reversal of 2646562 is 2656462.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 2656462 = 2 ⋅1328231.

It can be written as a sum of positive squares in only one way, i.e., 2157961 + 488601 = 1469^2 + 699^2 .

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (7) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 661639 + ... + 661642.

2^2646562 is an apocalyptic number.

2646562 is a deficient number, since it is larger than the sum of its proper divisors (1323284).

2646562 is a wasteful number, since it uses less digits than its factorization.

2646562 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1323283.

The product of its digits is 17280, while the sum is 31.

The square root of 2646562 is about 1626.8257435878. The cubic root of 2646562 is about 138.3228804540.

The spelling of 2646562 in words is "two million, six hundred forty-six thousand, five hundred sixty-two".