1666457002 has 16 divisors (see below), whose sum is σ = 2923221312. Its totient is φ = 697586400.

The previous prime is 1666456999. The next prime is 1666457027. The reversal of 1666457002 is 2007546661.

It is a happy number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 1383499 + ... + 1384702.

It is an arithmetic number, because the mean of its divisors is an integer number (182701332).

Almost surely, 2^1666457002 is an apocalyptic number.

1666457002 is a deficient number, since it is larger than the sum of its proper divisors (1256764310).

1666457002 is a wasteful number, since it uses less digits than its factorization.

1666457002 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2768253.

The product of its (nonzero) digits is 60480, while the sum is 37.

The square root of 1666457002 is about 40822.2611083708. The cubic root of 1666457002 is about 1185.5813824218.

The spelling of 1666457002 in words is "one billion, six hundred sixty-six million, four hundred fifty-seven thousand, two".