2351666 has 4 divisors (see below), whose sum is σ = 3527502. Its totient is φ = 1175832.

The previous prime is 2351653. The next prime is 2351693. The reversal of 2351666 is 6661532.

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., 1890625 + 461041 = 1375^2 + 679^2 .

It is an unprimeable number.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 587915 + ... + 587918.

2^2351666 is an apocalyptic number.

2351666 is a deficient number, since it is larger than the sum of its proper divisors (1175836).

2351666 is a wasteful number, since it uses less digits than its factorization.

2351666 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1175835.

The product of its digits is 6480, while the sum is 29.

The square root of 2351666 is about 1533.5142646875. The cubic root of 2351666 is about 132.9816998583.

The spelling of 2351666 in words is "two million, three hundred fifty-one thousand, six hundred sixty-six".