650666453 has 4 divisors (see below), whose sum is σ = 656635980. Its totient is φ = 644696928.

The previous prime is 650666441. The next prime is 650666473. The reversal of 650666453 is 354666056.

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 166358404 + 484308049 = 12898^2 + 22007^2 .

It is a cyclic number.

It is not a de Polignac number, because 650666453 - 2⁴ = 650666437 is a prime.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 650666453.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (650666473) 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, 2984600 + ... + 2984817.

It is an arithmetic number, because the mean of its divisors is an integer number (164158995).

Almost surely, 2^650666453 is an apocalyptic number.

It is an amenable number.

650666453 is a deficient number, since it is larger than the sum of its proper divisors (5969527).

650666453 is a wasteful number, since it uses less digits than its factorization.

650666453 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 5969526.

The product of its (nonzero) digits is 388800, while the sum is 41.

The square root of 650666453 is about 25508.1644380775. The cubic root of 650666453 is about 866.5350594209.

The spelling of 650666453 in words is "six hundred fifty million, six hundred sixty-six thousand, four hundred fifty-three".