690357067 has 2 divisors, whose sum is σ = 690357068. Its totient is φ = 690357066.

The previous prime is 690357061. The next prime is 690357071. The reversal of 690357067 is 760753096.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 690357067 - 2¹¹ = 690355019 is a prime.

It is not a weakly prime, because it can be changed into another prime (690357061) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 345178533 + 345178534.

It is an arithmetic number, because the mean of its divisors is an integer number (345178534).

Almost surely, 2^690357067 is an apocalyptic number.

690357067 is a deficient number, since it is larger than the sum of its proper divisors (1).

690357067 is an equidigital number, since it uses as much as digits as its factorization.

690357067 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 238140, while the sum is 43.

The square root of 690357067 is about 26274.6468482452. The cubic root of 690357067 is about 883.8079931294.

The spelling of 690357067 in words is "six hundred ninety million, three hundred fifty-seven thousand, sixty-seven".