18648706 has 4 divisors (see below), whose sum is σ = 27973062. Its totient is φ = 9324352.

The previous prime is 18648697. The next prime is 18648733. The reversal of 18648706 is 60784681.

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., 18567481 + 81225 = 4309^2 + 285^2 .

It is an unprimeable number.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 4662175 + ... + 4662178.

Almost surely, 2^18648706 is an apocalyptic number.

18648706 is a deficient number, since it is larger than the sum of its proper divisors (9324356).

18648706 is an equidigital number, since it uses as much as digits as its factorization.

18648706 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 9324355.

The product of its (nonzero) digits is 64512, while the sum is 40.

The square root of 18648706 is about 4318.4147554398. The cubic root of 18648706 is about 265.1853740340.

The spelling of 18648706 in words is "eighteen million, six hundred forty-eight thousand, seven hundred six".