870629 has 2 divisors, whose sum is σ = 870630. Its totient is φ = 870628.

The previous prime is 870613. The next prime is 870641. The reversal of 870629 is 926078.

870629 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 592900 + 277729 = 770^2 + 527^2 .

It is a cyclic number.

It is not a de Polignac number, because 870629 - 2⁴ = 870613 is a prime.

It is a Chen prime.

It is a junction number, because it is equal to n+sod(n) for n = 870595 and 870604.

It is a congruent number.

It is an inconsummate number, since it does not exist a number n which divided by its sum of digits gives 870629.

It is not a weakly prime, because it can be changed into another prime (870679) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 435314 + 435315.

It is an arithmetic number, because the mean of its divisors is an integer number (435315).

2⁸⁷⁰⁶²⁹ is an apocalyptic number.

It is an amenable number.

870629 is a deficient number, since it is larger than the sum of its proper divisors (1).

870629 is an equidigital number, since it uses as much as digits as its factorization.

870629 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 6048, while the sum is 32.

The square root of 870629 is about 933.0750237789. The cubic root of 870629 is about 95.4870280161.

The spelling of 870629 in words is "eight hundred seventy thousand, six hundred twenty-nine".