1406450630666 has 4 divisors (see below), whose sum is σ = 2109675946002. Its totient is φ = 703225315332.

The previous prime is 1406450630623. The next prime is 1406450630677. The reversal of 1406450630666 is 6660360546041.

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., 1266558922225 + 139891708441 = 1125415^2 + 374021^2 .

It is a self number, because there is not a number n which added to its sum of digits gives 1406450630666.

It is an unprimeable number.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 351612657665 + ... + 351612657668.

Almost surely, 2^{1406450630666} is an apocalyptic number.

1406450630666 is a deficient number, since it is larger than the sum of its proper divisors (703225315336).

1406450630666 is an equidigital number, since it uses as much as digits as its factorization.

1406450630666 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 703225315335.

The product of its (nonzero) digits is 1866240, while the sum is 47.

The spelling of 1406450630666 in words is "one trillion, four hundred six billion, four hundred fifty million, six hundred thirty thousand, six hundred sixty-six".