690377 has 2 divisors, whose sum is σ = 690378. Its totient is φ = 690376.

The previous prime is 690367. The next prime is 690397. The reversal of 690377 is 773096.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 687241 + 3136 = 829^2 + 56^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-690377 is a prime.

It is a Chen prime.

It is a nialpdrome in base 15.

It is not a weakly prime, because it can be changed into another prime (690367) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 345188 + 345189.

It is an arithmetic number, because the mean of its divisors is an integer number (345189).

2⁶⁹⁰³⁷⁷ is an apocalyptic number.

It is an amenable number.

690377 is a deficient number, since it is larger than the sum of its proper divisors (1).

690377 is an equidigital number, since it uses as much as digits as its factorization.

690377 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 7938, while the sum is 32.

The square root of 690377 is about 830.8892826364. The cubic root of 690377 is about 88.3816499247.

The spelling of 690377 in words is "six hundred ninety thousand, three hundred seventy-seven".