1345801617 has 18 divisors (see below), whose sum is σ = 2065015238. Its totient is φ = 844422912.

The previous prime is 1345801607. The next prime is 1345801631. The reversal of 1345801617 is 7161085431.

1345801617 is a `hidden beast` number, since 1 + 34 + 5 + 8 + 0 + 1 + 617 = 666.

It can be written as a sum of positive squares in 3 ways, for example, as 934158096 + 411643521 = 30564^2 + 20289^2 .

It is not a de Polignac number, because 1345801617 - 2⁷ = 1345801489 is a prime.

It is a super-2 number, since 2×1345801617² = 3622363984639629378, which contains 22 as substring.

It is a hoax number, since the sum of its digits (36) coincides with the sum of the digits of its distinct prime factors.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1345801607) by changing a digit.

It is a polite number, since it can be written in 17 ways as a sum of consecutive naturals, for example, 256108 + ... + 261309.

Almost surely, 2^1345801617 is an apocalyptic number.

1345801617 is a gapful number since it is divisible by the number (17) formed by its first and last digit.

It is an amenable number.

1345801617 is a deficient number, since it is larger than the sum of its proper divisors (719213621).

1345801617 is a wasteful number, since it uses less digits than its factorization.

1345801617 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 517457 (or 517437 counting only the distinct ones).

The product of its (nonzero) digits is 20160, while the sum is 36.

The square root of 1345801617 is about 36685.1688969807. The cubic root of 1345801617 is about 1104.0625579902.

The spelling of 1345801617 in words is "one billion, three hundred forty-five million, eight hundred one thousand, six hundred seventeen".