650871407 has 2 divisors, whose sum is σ = 650871408. Its totient is φ = 650871406.

The previous prime is 650871383. The next prime is 650871409. The reversal of 650871407 is 704178056.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 650871407 - 2¹⁸ = 650609263 is a prime.

Together with 650871409, it forms a pair of twin primes.

It is a Chen prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (650871409) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 325435703 + 325435704.

It is an arithmetic number, because the mean of its divisors is an integer number (325435704).

Almost surely, 2^650871407 is an apocalyptic number.

650871407 is a deficient number, since it is larger than the sum of its proper divisors (1).

650871407 is an equidigital number, since it uses as much as digits as its factorization.

650871407 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 47040, while the sum is 38.

The square root of 650871407 is about 25512.1815413735. The cubic root of 650871407 is about 866.6260334171.

The spelling of 650871407 in words is "six hundred fifty million, eight hundred seventy-one thousand, four hundred seven".