604687273781 has 2 divisors, whose sum is σ = 604687273782. Its totient is φ = 604687273780.

The previous prime is 604687273739. The next prime is 604687273807. The reversal of 604687273781 is 187372786406.

604687273781 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 375046008100 + 229641265681 = 612410^2 + 479209^2 .

It is a cyclic number.

It is not a de Polignac number, because 604687273781 - 2⁶ = 604687273717 is a prime.

It is a super-2 number, since 2×604687273781² (a number of 24 digits) contains 22 as substring.

It is a self number, because there is not a number n which added to its sum of digits gives 604687273781.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (604687273181) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 302343636890 + 302343636891.

It is an arithmetic number, because the mean of its divisors is an integer number (302343636891).

Almost surely, 2^604687273781 is an apocalyptic number.

It is an amenable number.

604687273781 is a deficient number, since it is larger than the sum of its proper divisors (1).

604687273781 is an equidigital number, since it uses as much as digits as its factorization.

604687273781 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 18966528, while the sum is 59.

The spelling of 604687273781 in words is "six hundred four billion, six hundred eighty-seven million, two hundred seventy-three thousand, seven hundred eighty-one".