648741946 has 8 divisors (see below), whose sum is σ = 995743584. Its totient is φ = 316827420.

The previous prime is 648741943. The next prime is 648741959. The reversal of 648741946 is 649147846.

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

It is a super-2 number, since 2×648741946² = 841732224999733832, which contains 22 as substring.

It is a self number, because there is not a number n which added to its sum of digits gives 648741946.

It is not an unprimeable number, because it can be changed into a prime (648741941) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 3771670 + ... + 3771841.

It is an arithmetic number, because the mean of its divisors is an integer number (124467948).

Almost surely, 2^648741946 is an apocalyptic number.

648741946 is a deficient number, since it is larger than the sum of its proper divisors (347001638).

648741946 is a wasteful number, since it uses less digits than its factorization.

648741946 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 7543556.

The product of its digits is 1161216, while the sum is 49.

The square root of 648741946 is about 25470.4131493778. The cubic root of 648741946 is about 865.6798851340.

The spelling of 648741946 in words is "six hundred forty-eight million, seven hundred forty-one thousand, nine hundred forty-six".