651070240 has 48 divisors (see below), whose sum is σ = 1553421240. Its totient is φ = 257843200.

The previous prime is 651070229. The next prime is 651070243. The reversal of 651070240 is 42070156.

It can be written as a sum of positive squares in 4 ways, for example, as 638876176 + 12194064 = 25276^2 + 3492^2 .

It is not an unprimeable number, because it can be changed into a prime (651070243) 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 7 ways as a sum of consecutive naturals, for example, 3985 + ... + 36304.

Almost surely, 2^651070240 is an apocalyptic number.

It is an amenable number.

651070240 is an abundant number, since it is smaller than the sum of its proper divisors (902351000).

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

651070240 is a wasteful number, since it uses less digits than its factorization.

651070240 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 40405 (or 40397 counting only the distinct ones).

The product of its (nonzero) digits is 1680, while the sum is 25.

The square root of 651070240 is about 25516.0780685434. The cubic root of 651070240 is about 866.7142722042.

The spelling of 651070240 in words is "six hundred fifty-one million, seventy thousand, two hundred forty".