1345761 has 8 divisors (see below), whose sum is σ = 1993760. Its totient is φ = 897156.

The previous prime is 1345759. The next prime is 1345777. The reversal of 1345761 is 1675431.

It is not a de Polignac number, because 1345761 - 2¹ = 1345759 is a prime.

It is a super-2 number, since 2×1345761² = 3622145338242, which contains 22 as substring.

It is a Harshad number since it is a multiple of its sum of digits (27), and also a Moran number because the ratio is a prime number: 49843 = 1345761 / (1 + 3 + 4 + 5 + 7 + 6 + 1).

It is a Duffinian number.

It is a Curzon number.

It is not an unprimeable number, because it can be changed into a prime (1345711) 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, 24895 + ... + 24948.

It is an arithmetic number, because the mean of its divisors is an integer number (249220).

2^1345761 is an apocalyptic number.

It is an amenable number.

1345761 is a deficient number, since it is larger than the sum of its proper divisors (647999).

1345761 is an equidigital number, since it uses as much as digits as its factorization.

1345761 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 49852 (or 49846 counting only the distinct ones).

The product of its digits is 2520, while the sum is 27.

The square root of 1345761 is about 1160.0693944760. The cubic root of 1345761 is about 110.4051450816.

The spelling of 1345761 in words is "one million, three hundred forty-five thousand, seven hundred sixty-one".