1329745 has 16 divisors (see below), whose sum is σ = 1723392. Its totient is φ = 982080.

The previous prime is 1329733. The next prime is 1329761. The reversal of 1329745 is 5479231.

It is not a de Polignac number, because 1329745 - 2⁹ = 1329233 is a prime.

It is a Harshad number since it is a multiple of its sum of digits (31).

It is a Duffinian number.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 3379 + ... + 3751.

It is an arithmetic number, because the mean of its divisors is an integer number (107712).

2^1329745 is an apocalyptic number.

It is an amenable number.

1329745 is a deficient number, since it is larger than the sum of its proper divisors (393647).

1329745 is a wasteful number, since it uses less digits than its factorization.

1329745 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 432.

The product of its digits is 7560, while the sum is 31.

The square root of 1329745 is about 1153.1456976462. The cubic root of 1329745 is about 109.9654161253.

The spelling of 1329745 in words is "one million, three hundred twenty-nine thousand, seven hundred forty-five".