641352097 has 2 divisors, whose sum is σ = 641352098. Its totient is φ = 641352096.

The previous prime is 641352077. The next prime is 641352133. The reversal of 641352097 is 790253146.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 327211921 + 314140176 = 18089^2 + 17724^2 .

It is a cyclic number.

It is not a de Polignac number, because 641352097 - 2²³ = 632963489 is a prime.

It is a super-2 number, since 2×641352097² = 822665024652594818, which contains 22 as substring.

It is not a weakly prime, because it can be changed into another prime (641352077) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 320676048 + 320676049.

It is an arithmetic number, because the mean of its divisors is an integer number (320676049).

Almost surely, 2^641352097 is an apocalyptic number.

It is an amenable number.

641352097 is a deficient number, since it is larger than the sum of its proper divisors (1).

641352097 is an equidigital number, since it uses as much as digits as its factorization.

641352097 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 45360, while the sum is 37.

The square root of 641352097 is about 25324.9303454126. The cubic root of 641352097 is about 862.3803251164.

The spelling of 641352097 in words is "six hundred forty-one million, three hundred fifty-two thousand, ninety-seven".