2421046666 has 4 divisors (see below), whose sum is σ = 3631570002. Its totient is φ = 1210523332.

The previous prime is 2421046577. The next prime is 2421046681. The reversal of 2421046666 is 6666401242.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in only one way, i.e., 1280566225 + 1140480441 = 35785^2 + 33771^2 .

It is a super-2 number, since 2×2421046666² = 11722933917899431112, which contains 22 as substring.

It is an unprimeable number.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 605261665 + ... + 605261668.

Almost surely, 2^2421046666 is an apocalyptic number.

2421046666 is a deficient number, since it is larger than the sum of its proper divisors (1210523336).

2421046666 is a wasteful number, since it uses less digits than its factorization.

2421046666 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1210523335.

The product of its (nonzero) digits is 82944, while the sum is 37.

The square root of 2421046666 is about 49204.1326109911. The cubic root of 2421046666 is about 1342.7682184955.

It can be divided in two parts, 24210 and 46666, that added together give a triangular number (70876 = T₃₇₆).

The spelling of 2421046666 in words is "two billion, four hundred twenty-one million, forty-six thousand, six hundred sixty-six".