650495749 has 4 divisors (see below), whose sum is σ = 657804780. Its totient is φ = 643186720.

The previous prime is 650495731. The next prime is 650495771. The reversal of 650495749 is 947594056.

It is a happy number.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in 2 ways, for example, as 348083649 + 302412100 = 18657^2 + 17390^2 .

It is a cyclic number.

It is not a de Polignac number, because 650495749 - 2²⁹ = 113624837 is a prime.

It is a Smith number, since the sum of its digits (49) coincides with the sum of the digits of its prime factors. Since it is squarefree, it is also a hoax number.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (650495149) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 3654382 + ... + 3654559.

It is an arithmetic number, because the mean of its divisors is an integer number (164451195).

Almost surely, 2^650495749 is an apocalyptic number.

It is an amenable number.

650495749 is a deficient number, since it is larger than the sum of its proper divisors (7309031).

650495749 is an equidigital number, since it uses as much as digits as its factorization.

650495749 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 7309030.

The product of its (nonzero) digits is 1360800, while the sum is 49.

The square root of 650495749 is about 25504.8181526550. The cubic root of 650495749 is about 866.4592735668.

The spelling of 650495749 in words is "six hundred fifty million, four hundred ninety-five thousand, seven hundred forty-nine".