641684053 has 2 divisors, whose sum is σ = 641684054. Its totient is φ = 641684052.

The previous prime is 641684027. The next prime is 641684101. The reversal of 641684053 is 350486146.

It is a happy number.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 612166564 + 29517489 = 24742^2 + 5433^2 .

It is a cyclic number.

It is not a de Polignac number, because 641684053 - 2¹³ = 641675861 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (641684353) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 320842026 + 320842027.

It is an arithmetic number, because the mean of its divisors is an integer number (320842027).

Almost surely, 2^641684053 is an apocalyptic number.

It is an amenable number.

641684053 is a deficient number, since it is larger than the sum of its proper divisors (1).

641684053 is an equidigital number, since it uses as much as digits as its factorization.

641684053 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 69120, while the sum is 37.

The square root of 641684053 is about 25331.4834346510. The cubic root of 641684053 is about 862.5290852896.

The spelling of 641684053 in words is "six hundred forty-one million, six hundred eighty-four thousand, fifty-three".