678962629 has 2 divisors, whose sum is σ = 678962630. Its totient is φ = 678962628.

The previous prime is 678962593. The next prime is 678962633. The reversal of 678962629 is 926269876.

It is a happy number.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 571114404 + 107848225 = 23898^2 + 10385^2 .

It is a cyclic number.

It is not a de Polignac number, because 678962629 - 2⁹ = 678962117 is a prime.

It is a Chen prime.

It is a self number, because there is not a number n which added to its sum of digits gives 678962629.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (678962689) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 339481314 + 339481315.

It is an arithmetic number, because the mean of its divisors is an integer number (339481315).

Almost surely, 2^678962629 is an apocalyptic number.

It is an amenable number.

678962629 is a deficient number, since it is larger than the sum of its proper divisors (1).

678962629 is an equidigital number, since it uses as much as digits as its factorization.

678962629 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 3919104, while the sum is 55.

The square root of 678962629 is about 26056.9113480474. The cubic root of 678962629 is about 878.9185359049.

The spelling of 678962629 in words is "six hundred seventy-eight million, nine hundred sixty-two thousand, six hundred twenty-nine".