1345961 has 4 divisors (see below), whose sum is σ = 1354692. Its totient is φ = 1337232.

The previous prime is 1345957. The next prime is 1345973. The reversal of 1345961 is 1695431.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 1695431 = 47 ⋅36073.

It can be written as a sum of positive squares in 2 ways, for example, as 414736 + 931225 = 644^2 + 965^2 .

It is a cyclic number.

It is not a de Polignac number, because 1345961 - 2² = 1345957 is a prime.

It is a super-2 number, since 2×1345961² = 3623222027042, which contains 22 as substring.

It is a d-powerful number, because it can be written as 1 + 3¹² + 4² + 5⁵ + 9⁶ + 6⁷ + 1 .

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (1345921) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 4130 + ... + 4443.

It is an arithmetic number, because the mean of its divisors is an integer number (338673).

2^1345961 is an apocalyptic number.

It is an amenable number.

1345961 is a deficient number, since it is larger than the sum of its proper divisors (8731).

1345961 is an equidigital number, since it uses as much as digits as its factorization.

1345961 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 8730.

The product of its digits is 3240, while the sum is 29.

The square root of 1345961 is about 1160.1555930133. The cubic root of 1345961 is about 110.4106140901.

The spelling of 1345961 in words is "one million, three hundred forty-five thousand, nine hundred sixty-one".