648842372 has 12 divisors (see below), whose sum is σ = 1140187356. Its totient is φ = 323074560.

The previous prime is 648842371. The next prime is 648842387. The reversal of 648842372 is 273248846.

It is a happy number.

It can be written as a sum of positive squares in 2 ways, for example, as 389825536 + 259016836 = 19744^2 + 16094^2 .

It is not an unprimeable number, because it can be changed into a prime (648842371) 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, 335573 + ... + 337500.

It is an arithmetic number, because the mean of its divisors is an integer number (95015613).

Almost surely, 2^648842372 is an apocalyptic number.

It is an amenable number.

648842372 is a deficient number, since it is larger than the sum of its proper divisors (491344984).

648842372 is a wasteful number, since it uses less digits than its factorization.

648842372 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 673318 (or 673316 counting only the distinct ones).

The product of its digits is 516096, while the sum is 44.

The square root of 648842372 is about 25472.3844977262. The cubic root of 648842372 is about 865.7245522434.

The spelling of 648842372 in words is "six hundred forty-eight million, eight hundred forty-two thousand, three hundred seventy-two".