677914819 has 2 divisors, whose sum is σ = 677914820. Its totient is φ = 677914818.

The previous prime is 677914807. The next prime is 677914837. The reversal of 677914819 is 918419776.

It is a weak prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-677914819 is a prime.

It is a super-2 number, since 2×677914819² = 919137003639605522, which contains 22 as substring.

It is not a weakly prime, because it can be changed into another prime (677914019) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 338957409 + 338957410.

It is an arithmetic number, because the mean of its divisors is an integer number (338957410).

Almost surely, 2^677914819 is an apocalyptic number.

677914819 is a deficient number, since it is larger than the sum of its proper divisors (1).

677914819 is an equidigital number, since it uses as much as digits as its factorization.

677914819 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 762048, while the sum is 52.

The square root of 677914819 is about 26036.7974029065. The cubic root of 677914819 is about 878.4661723798.

The spelling of 677914819 in words is "six hundred seventy-seven million, nine hundred fourteen thousand, eight hundred nineteen".