2402666 has 12 divisors (see below), whose sum is σ = 4192578. Its totient is φ = 1029672.

The previous prime is 2402663. The next prime is 2402677. The reversal of 2402666 is 6662042.

2402666 = T₄₈ + T₄₉ + ... + T₂₄₃.

It can be written as a sum of positive squares in only one way, i.e., 2265025 + 137641 = 1505^2 + 371^2 .

It is not an unprimeable number, because it can be changed into a prime (2402663) by changing a digit.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 12161 + ... + 12356.

2^2402666 is an apocalyptic number.

2402666 is a deficient number, since it is larger than the sum of its proper divisors (1789912).

2402666 is a wasteful number, since it uses less digits than its factorization.

2402666 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 24533 (or 24526 counting only the distinct ones).

The product of its (nonzero) digits is 3456, while the sum is 26.

The square root of 2402666 is about 1550.0535474622. The cubic root of 2402666 is about 133.9361469002.

The spelling of 2402666 in words is "two million, four hundred two thousand, six hundred sixty-six".