667020353 has 2 divisors, whose sum is σ = 667020354. Its totient is φ = 667020352.

The previous prime is 667020331. The next prime is 667020407. The reversal of 667020353 is 353020766.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 516516529 + 150503824 = 22727^2 + 12268^2 .

It is a cyclic number.

It is not a de Polignac number, because 667020353 - 2¹⁴ = 667003969 is a prime.

It is a Sophie Germain prime.

It is a Curzon number.

It is not a weakly prime, because it can be changed into another prime (667020553) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 333510176 + 333510177.

It is an arithmetic number, because the mean of its divisors is an integer number (333510177).

Almost surely, 2^667020353 is an apocalyptic number.

It is an amenable number.

667020353 is a deficient number, since it is larger than the sum of its proper divisors (1).

667020353 is an equidigital number, since it uses as much as digits as its factorization.

667020353 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 22680, while the sum is 32.

The square root of 667020353 is about 25826.7371729377. The cubic root of 667020353 is about 873.7349241601.

The spelling of 667020353 in words is "six hundred sixty-seven million, twenty thousand, three hundred fifty-three".