166630004 has 6 divisors (see below), whose sum is σ = 291602514. Its totient is φ = 83315000.

The previous prime is 166629997. The next prime is 166630007. The reversal of 166630004 is 400036661.

It can be written as a sum of positive squares in only one way, i.e., 141610000 + 25020004 = 11900^2 + 5002^2 .

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (166630007) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 20828747 + ... + 20828754.

It is an arithmetic number, because the mean of its divisors is an integer number (48600419).

Almost surely, 2^166630004 is an apocalyptic number.

It is an amenable number.

166630004 is a deficient number, since it is larger than the sum of its proper divisors (124972510).

166630004 is a wasteful number, since it uses less digits than its factorization.

166630004 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 41657505 (or 41657503 counting only the distinct ones).

The product of its (nonzero) digits is 2592, while the sum is 26.

The square root of 166630004 is about 12908.5244702871. The cubic root of 166630004 is about 550.2808527039.

Adding to 166630004 its reverse (400036661), we get a palindrome (566666665).

The spelling of 166630004 in words is "one hundred sixty-six million, six hundred thirty thousand, four".