650947872 has 24 divisors (see below), whose sum is σ = 1708738416. Its totient is φ = 216982592.

The previous prime is 650947861. The next prime is 650947877. The reversal of 650947872 is 278749056.

It is a tau number, because it is divible by the number of its divisors (24).

It is a super-2 number, since 2×650947872² = 847466264122656768, which contains 22 as substring.

It is a Smith number, since the sum of its digits (48) coincides with the sum of the digits of its prime factors.

It is a Harshad number since it is a multiple of its sum of digits (48).

It is an alternating number because its digits alternate between even and odd.

It is not an unprimeable number, because it can be changed into a prime (650947877) 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, 3390258 + ... + 3390449.

It is an arithmetic number, because the mean of its divisors is an integer number (71197434).

Almost surely, 2^650947872 is an apocalyptic number.

It is an amenable number.

650947872 is an abundant number, since it is smaller than the sum of its proper divisors (1057790544).

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

650947872 is a wasteful number, since it uses less digits than its factorization.

650947872 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 6780720 (or 6780712 counting only the distinct ones).

The product of its (nonzero) digits is 846720, while the sum is 48.

The square root of 650947872 is about 25513.6800951960. The cubic root of 650947872 is about 866.6599694420.

The spelling of 650947872 in words is "six hundred fifty million, nine hundred forty-seven thousand, eight hundred seventy-two".