1340856677 has 8 divisors (see below), whose sum is σ = 1364825592. Its totient is φ = 1316952000.

The previous prime is 1340856641. The next prime is 1340856683. The reversal of 1340856677 is 7766580431.

It can be written as a sum of positive squares in 4 ways, for example, as 226231681 + 1114624996 = 15041^2 + 33386^2 .

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 1340856677 - 2¹² = 1340852581 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1340856877) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 27083 + ... + 58439.

It is an arithmetic number, because the mean of its divisors is an integer number (170603199).

Almost surely, 2^1340856677 is an apocalyptic number.

It is an amenable number.

1340856677 is a deficient number, since it is larger than the sum of its proper divisors (23968915).

1340856677 is an equidigital number, since it uses as much as digits as its factorization.

1340856677 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 32119.

The product of its (nonzero) digits is 846720, while the sum is 47.

The square root of 1340856677 is about 36617.7098819683. The cubic root of 1340856677 is about 1102.7086626750.

The spelling of 1340856677 in words is "one billion, three hundred forty million, eight hundred fifty-six thousand, six hundred seventy-seven".