1368657677 has 6 divisors (see below), whose sum is σ = 1375897614. Its totient is φ = 1361455640.

The previous prime is 1368657673. The next prime is 1368657679. The reversal of 1368657677 is 7767568631.

It can be written as a sum of positive squares in only one way, i.e., 1168887721 + 199769956 = 34189^2 + 14134^2 .

It is not a de Polignac number, because 1368657677 - 2² = 1368657673 is a prime.

It is a super-2 number, since 2×1368657677² = 3746447673622072658, which contains 22 as substring.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1368657673) 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 in 5 ways as a sum of consecutive naturals, for example, 17723 + ... + 55239.

It is an arithmetic number, because the mean of its divisors is an integer number (229316269).

Almost surely, 2^1368657677 is an apocalyptic number.

It is an amenable number.

1368657677 is a deficient number, since it is larger than the sum of its proper divisors (7239937).

1368657677 is an frugal number, since it uses more digits than its factorization.

1368657677 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 37899 (or 37708 counting only the distinct ones).

The product of its digits is 8890560, while the sum is 56.

The square root of 1368657677 is about 36995.3737242915. The cubic root of 1368657677 is about 1110.2776885532.

The spelling of 1368657677 in words is "one billion, three hundred sixty-eight million, six hundred fifty-seven thousand, six hundred seventy-seven".