648400146 has 8 divisors (see below), whose sum is σ = 1296800304. Its totient is φ = 216133380.

The previous prime is 648400133. The next prime is 648400169. The reversal of 648400146 is 641004846.

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

648400146 is an admirable number.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 54033340 + ... + 54033351.

It is an arithmetic number, because the mean of its divisors is an integer number (162100038).

Almost surely, 2^648400146 is an apocalyptic number.

648400146 is a primitive abundant number, since it is smaller than the sum of its proper divisors, none of which is abundant.

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

648400146 is a wasteful number, since it uses less digits than its factorization.

648400146 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 108066696.

The product of its (nonzero) digits is 18432, while the sum is 33.

The square root of 648400146 is about 25463.7025194688. The cubic root of 648400146 is about 865.5278260261.

The spelling of 648400146 in words is "six hundred forty-eight million, four hundred thousand, one hundred forty-six".