650434440 has 64 divisors (see below), whose sum is σ = 1953020160. Its totient is φ = 173296640.

The previous prime is 650434427. The next prime is 650434471. The reversal of 650434440 is 44434056.

It is a super-2 number, since 2×650434440² = 846129921476227200, which contains 22 as substring.

It is a Harshad number since it is a multiple of its sum of digits (30).

It is a junction number, because it is equal to n+sod(n) for n = 650434398 and 650434407.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 223072 + ... + 225968.

It is an arithmetic number, because the mean of its divisors is an integer number (30515940).

Almost surely, 2^650434440 is an apocalyptic number.

650434440 is a gapful number since it is divisible by the number (60) formed by its first and last digit.

It is an amenable number.

650434440 is an abundant number, since it is smaller than the sum of its proper divisors (1302585720).

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

650434440 is a wasteful number, since it uses less digits than its factorization.

650434440 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4782 (or 4778 counting only the distinct ones).

The product of its (nonzero) digits is 23040, while the sum is 30.

The square root of 650434440 is about 25503.6162141764. The cubic root of 650434440 is about 866.4320515490.

Adding to 650434440 its reverse (44434056), we get a palindrome (694868496).

The spelling of 650434440 in words is "six hundred fifty million, four hundred thirty-four thousand, four hundred forty".