677914429 has 2 divisors, whose sum is σ = 677914430. Its totient is φ = 677914428.

The previous prime is 677914409. The next prime is 677914441. The reversal of 677914429 is 924419776.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 649077529 + 28836900 = 25477^2 + 5370^2 .

It is a cyclic number.

It is not a de Polignac number, because 677914429 - 2⁷ = 677914301 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (677914409) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 338957214 + 338957215.

It is an arithmetic number, because the mean of its divisors is an integer number (338957215).

Almost surely, 2^677914429 is an apocalyptic number.

It is an amenable number.

677914429 is a deficient number, since it is larger than the sum of its proper divisors (1).

677914429 is an equidigital number, since it uses as much as digits as its factorization.

677914429 is an evil number, because the sum of its binary digits is even.

The product of its digits is 762048, while the sum is 49.

The square root of 677914429 is about 26036.7899135051. The cubic root of 677914429 is about 878.4660039212.

The spelling of 677914429 in words is "six hundred seventy-seven million, nine hundred fourteen thousand, four hundred twenty-nine".