1213465 has 8 divisors (see below), whose sum is σ = 1588608. Its totient is φ = 882480.

The previous prime is 1213451. The next prime is 1213469. The reversal of 1213465 is 5643121.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a de Polignac number, because none of the positive numbers 2^k-1213465 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (1213469) 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 in 7 ways as a sum of consecutive naturals, for example, 10977 + ... + 11086.

It is an arithmetic number, because the mean of its divisors is an integer number (198576).

2^1213465 is an apocalyptic number.

It is an amenable number.

1213465 is a deficient number, since it is larger than the sum of its proper divisors (375143).

1213465 is a wasteful number, since it uses less digits than its factorization.

1213465 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 22079.

The product of its digits is 720, while the sum is 22.

The square root of 1213465 is about 1101.5738740548. The cubic root of 1213465 is about 106.6618433149.

Adding to 1213465 its reverse (5643121), we get a palindrome (6856586).

The spelling of 1213465 in words is "one million, two hundred thirteen thousand, four hundred sixty-five".