690107629 has 2 divisors, whose sum is σ = 690107630. Its totient is φ = 690107628.

The previous prime is 690107603. The next prime is 690107633. The reversal of 690107629 is 926701096.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 686964100 + 3143529 = 26210^2 + 1773^2 .

It is a cyclic number.

It is not a de Polignac number, because 690107629 - 2⁷ = 690107501 is a prime.

It is a Chen prime.

It is a junction number, because it is equal to n+sod(n) for n = 690107591 and 690107600.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (690107689) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 345053814 + 345053815.

It is an arithmetic number, because the mean of its divisors is an integer number (345053815).

Almost surely, 2^690107629 is an apocalyptic number.

It is an amenable number.

690107629 is a deficient number, since it is larger than the sum of its proper divisors (1).

690107629 is an equidigital number, since it uses as much as digits as its factorization.

690107629 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 40824, while the sum is 40.

The square root of 690107629 is about 26269.8996762454. The cubic root of 690107629 is about 883.7015352467.

The spelling of 690107629 in words is "six hundred ninety million, one hundred seven thousand, six hundred twenty-nine".