1345677517 has 8 divisors (see below), whose sum is σ = 1473967800. Its totient is φ = 1222846464.

The previous prime is 1345677503. The next prime is 1345677569. The reversal of 1345677517 is 7157765431.

It can be written as a sum of positive squares in 4 ways, for example, as 302968836 + 1042708681 = 17406^2 + 32291^2 .

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 1345677517 - 2²⁷ = 1211459789 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 (1345677577) 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, 1364292 + ... + 1365277.

It is an arithmetic number, because the mean of its divisors is an integer number (184245975).

Almost surely, 2^1345677517 is an apocalyptic number.

1345677517 is a gapful number since it is divisible by the number (17) formed by its first and last digit.

It is an amenable number.

1345677517 is a deficient number, since it is larger than the sum of its proper divisors (128290283).

1345677517 is a wasteful number, since it uses less digits than its factorization.

1345677517 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2729615.

The product of its digits is 617400, while the sum is 46.

The square root of 1345677517 is about 36683.4774387598. The cubic root of 1345677517 is about 1104.0286207508.

The spelling of 1345677517 in words is "one billion, three hundred forty-five million, six hundred seventy-seven thousand, five hundred seventeen".