650521663 has 8 divisors (see below), whose sum is σ = 710978256. Its totient is φ = 590284800.

The previous prime is 650521657. The next prime is 650521687. The reversal of 650521663 is 366125056.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-650521663 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 (650521603) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 48706 + ... + 60607.

It is an arithmetic number, because the mean of its divisors is an integer number (88872282).

Almost surely, 2^650521663 is an apocalyptic number.

650521663 is a deficient number, since it is larger than the sum of its proper divisors (60456593).

650521663 is a wasteful number, since it uses less digits than its factorization.

650521663 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 109865.

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

The square root of 650521663 is about 25505.3261692534. The cubic root of 650521663 is about 866.4707792159.

The spelling of 650521663 in words is "six hundred fifty million, five hundred twenty-one thousand, six hundred sixty-three".