18630706 has 12 divisors (see below), whose sum is σ = 28560078. Its totient is φ = 9114992.

The previous prime is 18630683. The next prime is 18630709. The reversal of 18630706 is 60703681.

It can be written as a sum of positive squares in only one way, i.e., 12425625 + 6205081 = 3525^2 + 2491^2 .

It is a super-3 number, since 3×18630706³ (a number of 23 digits) contains 333 as substring.

It is not an unprimeable number, because it can be changed into a prime (18630709) by changing a digit.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 2310 + ... + 6526.

Almost surely, 2^18630706 is an apocalyptic number.

18630706 is a deficient number, since it is larger than the sum of its proper divisors (9929372).

18630706 is an equidigital number, since it uses as much as digits as its factorization.

18630706 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 4313 (or 4266 counting only the distinct ones).

The product of its (nonzero) digits is 6048, while the sum is 31.

The square root of 18630706 is about 4316.3301541935. The cubic root of 18630706 is about 265.1000263193.

The spelling of 18630706 in words is "eighteen million, six hundred thirty thousand, seven hundred six".