1345634 has 4 divisors (see below), whose sum is σ = 2018454. Its totient is φ = 672816.

The previous prime is 1345633. The next prime is 1345649. The reversal of 1345634 is 4365431.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 4365431 = 7 ⋅623633.

It can be written as a sum of positive squares in only one way, i.e., 1221025 + 124609 = 1105^2 + 353^2 .

It is a d-powerful number, because it can be written as 1 + 3 + 4⁷ + 5 + 6⁷ + 3⁶ + 4¹⁰ .

It is not an unprimeable number, because it can be changed into a prime (1345633) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (7) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 336407 + ... + 336410.

2^1345634 is an apocalyptic number.

1345634 is a deficient number, since it is larger than the sum of its proper divisors (672820).

1345634 is an equidigital number, since it uses as much as digits as its factorization.

1345634 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 672819.

The product of its digits is 4320, while the sum is 26.

The square root of 1345634 is about 1160.0146550798. The cubic root of 1345634 is about 110.4016719799.

The spelling of 1345634 in words is "one million, three hundred forty-five thousand, six hundred thirty-four".