650979481 has 2 divisors, whose sum is σ = 650979482. Its totient is φ = 650979480.

The previous prime is 650979431. The next prime is 650979583. The reversal of 650979481 is 184979056.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 650709081 + 270400 = 25509^2 + 520^2 .

It is a cyclic number.

It is not a de Polignac number, because 650979481 - 2¹¹ = 650977433 is a prime.

It is a super-2 number, since 2×650979481² = 847548569366058722, which contains 22 as substring.

It is not a weakly prime, because it can be changed into another prime (650979401) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 325489740 + 325489741.

It is an arithmetic number, because the mean of its divisors is an integer number (325489741).

Almost surely, 2^650979481 is an apocalyptic number.

It is an amenable number.

650979481 is a deficient number, since it is larger than the sum of its proper divisors (1).

650979481 is an equidigital number, since it uses as much as digits as its factorization.

650979481 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 544320, while the sum is 49.

The square root of 650979481 is about 25514.2995396699. The cubic root of 650979481 is about 866.6739970945.

The spelling of 650979481 in words is "six hundred fifty million, nine hundred seventy-nine thousand, four hundred eighty-one".