650612653 has 4 divisors (see below), whose sum is σ = 652833468. Its totient is φ = 648391840.

The previous prime is 650612639. The next prime is 650612663. The reversal of 650612653 is 356216056.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in 2 ways, for example, as 568202569 + 82410084 = 23837^2 + 9078^2 .

It is a cyclic number.

It is not a de Polignac number, because 650612653 - 2¹⁷ = 650481581 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (650612623) 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, 1109968 + ... + 1110553.

It is an arithmetic number, because the mean of its divisors is an integer number (163208367).

Almost surely, 2^650612653 is an apocalyptic number.

It is an amenable number.

650612653 is a deficient number, since it is larger than the sum of its proper divisors (2220815).

650612653 is a wasteful number, since it uses less digits than its factorization.

650612653 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2220814.

The product of its (nonzero) digits is 32400, while the sum is 34.

The square root of 650612653 is about 25507.1098519609. The cubic root of 650612653 is about 866.5111757700.

The spelling of 650612653 in words is "six hundred fifty million, six hundred twelve thousand, six hundred fifty-three".