1213497 has 12 divisors (see below), whose sum is σ = 1770340. Its totient is φ = 800928.

The previous prime is 1213483. The next prime is 1213517. The reversal of 1213497 is 7943121.

It can be written as a sum of positive squares in 2 ways, for example, as 881721 + 331776 = 939^2 + 576^2 .

It is not a de Polignac number, because 1213497 - 2⁴ = 1213481 is a prime.

It is a Duffinian number.

1213497 is a lucky number.

It is a self number, because there is not a number n which added to its sum of digits gives 1213497.

It is not an unprimeable number, because it can be changed into a prime (1213427) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 363 + ... + 1599.

2^1213497 is an apocalyptic number.

It is an amenable number.

1213497 is a deficient number, since it is larger than the sum of its proper divisors (556843).

1213497 is a wasteful number, since it uses less digits than its factorization.

1213497 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1352 (or 1349 counting only the distinct ones).

The product of its digits is 1512, while the sum is 27.

The square root of 1213497 is about 1101.5883986317. The cubic root of 1213497 is about 106.6627808914.

The spelling of 1213497 in words is "one million, two hundred thirteen thousand, four hundred ninety-seven".