648370446 has 16 divisors (see below), whose sum is σ = 1373019984. Its totient is φ = 203410304.

The previous prime is 648370441. The next prime is 648370501. The reversal of 648370446 is 644073846.

It is a junction number, because it is equal to n+sod(n) for n = 648370398 and 648370407.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (648370441) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 3178185 + ... + 3178388.

It is an arithmetic number, because the mean of its divisors is an integer number (85813749).

Almost surely, 2^648370446 is an apocalyptic number.

648370446 is an abundant number, since it is smaller than the sum of its proper divisors (724649538).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

648370446 is a wasteful number, since it uses less digits than its factorization.

648370446 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 6356595.

The product of its (nonzero) digits is 387072, while the sum is 42.

The square root of 648370446 is about 25463.1193297286. The cubic root of 648370446 is about 865.5146106430.

The spelling of 648370446 in words is "six hundred forty-eight million, three hundred seventy thousand, four hundred forty-six".