641374973 has 2 divisors, whose sum is σ = 641374974. Its totient is φ = 641374972.

The previous prime is 641374939. The next prime is 641375011. The reversal of 641374973 is 379473146.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 324072004 + 317302969 = 18002^2 + 17813^2 .

It is a cyclic number.

It is not a de Polignac number, because 641374973 - 2¹⁰ = 641373949 is a prime.

It is a super-2 number, since 2×641374973² = 822723711981501458, which contains 22 as substring.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (641374273) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 320687486 + 320687487.

It is an arithmetic number, because the mean of its divisors is an integer number (320687487).

Almost surely, 2^641374973 is an apocalyptic number.

It is an amenable number.

641374973 is a deficient number, since it is larger than the sum of its proper divisors (1).

641374973 is an equidigital number, since it uses as much as digits as its factorization.

641374973 is an evil number, because the sum of its binary digits is even.

The product of its digits is 381024, while the sum is 44.

The square root of 641374973 is about 25325.3819911961. The cubic root of 641374973 is about 862.3905782352.

The spelling of 641374973 in words is "six hundred forty-one million, three hundred seventy-four thousand, nine hundred seventy-three".