650523997 has 2 divisors, whose sum is σ = 650523998. Its totient is φ = 650523996.

The previous prime is 650523983. The next prime is 650524003. The reversal of 650523997 is 799325056.

It is a happy number.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 457147161 + 193376836 = 21381^2 + 13906^2 .

It is a cyclic number.

It is not a de Polignac number, because 650523997 - 2⁷ = 650523869 is a prime.

It is a super-3 number, since 3×650523997³ (a number of 27 digits) contains 333 as substring.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (650523967) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 325261998 + 325261999.

It is an arithmetic number, because the mean of its divisors is an integer number (325261999).

Almost surely, 2^650523997 is an apocalyptic number.

It is an amenable number.

650523997 is a deficient number, since it is larger than the sum of its proper divisors (1).

650523997 is an equidigital number, since it uses as much as digits as its factorization.

650523997 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 510300, while the sum is 46.

The square root of 650523997 is about 25505.3719243613. The cubic root of 650523997 is about 866.4718154819.

The spelling of 650523997 in words is "six hundred fifty million, five hundred twenty-three thousand, nine hundred ninety-seven".