650688631652 has 12 divisors (see below), whose sum is σ = 1138923745260. Its totient is φ = 325281847296.

The previous prime is 650688631651. The next prime is 650688631673. The reversal of 650688631652 is 256136886056.

It can be written as a sum of positive squares in 2 ways, for example, as 635680911616 + 15007720036 = 797296^2 + 122506^2 .

It is a super-2 number, since 2×650688631652² (a number of 24 digits) contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (650688631651) 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, 15593693 + ... + 15635364.

It is an arithmetic number, because the mean of its divisors is an integer number (94910312105).

Almost surely, 2^650688631652 is an apocalyptic number.

It is an amenable number.

650688631652 is a deficient number, since it is larger than the sum of its proper divisors (488235113608).

650688631652 is a wasteful number, since it uses less digits than its factorization.

650688631652 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 31234270 (or 31234268 counting only the distinct ones).

The product of its (nonzero) digits is 12441600, while the sum is 56.

The spelling of 650688631652 in words is "six hundred fifty billion, six hundred eighty-eight million, six hundred thirty-one thousand, six hundred fifty-two".