650971 has 2 divisors, whose sum is σ = 650972. Its totient is φ = 650970.

The previous prime is 650953. The next prime is 650987. The reversal of 650971 is 179056.

It is a happy number.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 650971 - 2¹³ = 642779 is a prime.

It is a Chen prime.

650971 is a lucky number.

It is not a weakly prime, because it can be changed into another prime (650911) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 325485 + 325486.

It is an arithmetic number, because the mean of its divisors is an integer number (325486).

2⁶⁵⁰⁹⁷¹ is an apocalyptic number.

650971 is a deficient number, since it is larger than the sum of its proper divisors (1).

650971 is an equidigital number, since it uses as much as digits as its factorization.

650971 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 1890, while the sum is 28.

The square root of 650971 is about 806.8277387398. The cubic root of 650971 is about 86.6670233384.

The spelling of 650971 in words is "six hundred fifty thousand, nine hundred seventy-one".