678413399 has 2 divisors, whose sum is σ = 678413400. Its totient is φ = 678413398.

The previous prime is 678413383. The next prime is 678413423. The reversal of 678413399 is 993314876.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 678413399 - 2⁴ = 678413383 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (678413699) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 339206699 + 339206700.

It is an arithmetic number, because the mean of its divisors is an integer number (339206700).

Almost surely, 2^678413399 is an apocalyptic number.

678413399 is a deficient number, since it is larger than the sum of its proper divisors (1).

678413399 is an equidigital number, since it uses as much as digits as its factorization.

678413399 is an evil number, because the sum of its binary digits is even.

The product of its digits is 979776, while the sum is 50.

The square root of 678413399 is about 26046.3701693729. The cubic root of 678413399 is about 878.6814788470.

The spelling of 678413399 in words is "six hundred seventy-eight million, four hundred thirteen thousand, three hundred ninety-nine".