648242806 has 8 divisors (see below), whose sum is σ = 980969544. Its totient is φ = 321252960.

The previous prime is 648242789. The next prime is 648242809. The reversal of 648242806 is 608242846.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (648242809) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 1433940 + ... + 1434391.

It is an arithmetic number, because the mean of its divisors is an integer number (122621193).

Almost surely, 2^648242806 is an apocalyptic number.

648242806 is a deficient number, since it is larger than the sum of its proper divisors (332726738).

648242806 is a wasteful number, since it uses less digits than its factorization.

648242806 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2868446.

The product of its (nonzero) digits is 147456, while the sum is 40.

The square root of 648242806 is about 25460.6128363007. The cubic root of 648242806 is about 865.4578110486.

Adding to 648242806 its sum of digits (40), we get a palindrome (648242846).

The spelling of 648242806 in words is "six hundred forty-eight million, two hundred forty-two thousand, eight hundred six".