690573353 has 2 divisors, whose sum is σ = 690573354. Its totient is φ = 690573352.

The previous prime is 690573313. The next prime is 690573407. The reversal of 690573353 is 353375096.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 614395369 + 76177984 = 24787^2 + 8728^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-690573353 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 690573353.

It is not a weakly prime, because it can be changed into another prime (690573313) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 345286676 + 345286677.

It is an arithmetic number, because the mean of its divisors is an integer number (345286677).

Almost surely, 2^690573353 is an apocalyptic number.

It is an amenable number.

690573353 is a deficient number, since it is larger than the sum of its proper divisors (1).

690573353 is an equidigital number, since it uses as much as digits as its factorization.

690573353 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 255150, while the sum is 41.

The square root of 690573353 is about 26278.7623947552. The cubic root of 690573353 is about 883.9002812826.

The spelling of 690573353 in words is "six hundred ninety million, five hundred seventy-three thousand, three hundred fifty-three".