1218977 has 4 divisors (see below), whose sum is σ = 1272000. Its totient is φ = 1165956.

The previous prime is 1218953. The next prime is 1218989. The reversal of 1218977 is 7798121.

1218977 is nontrivially palindromic in base 4.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is not a de Polignac number, because 1218977 - 2⁶ = 1218913 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (1218277) 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, 26477 + ... + 26522.

It is an arithmetic number, because the mean of its divisors is an integer number (318000).

2^1218977 is an apocalyptic number.

It is an amenable number.

1218977 is a deficient number, since it is larger than the sum of its proper divisors (53023).

1218977 is an equidigital number, since it uses as much as digits as its factorization.

1218977 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 53022.

The product of its digits is 7056, while the sum is 35.

The square root of 1218977 is about 1104.0729142588. The cubic root of 1218977 is about 106.8230983813.

The spelling of 1218977 in words is "one million, two hundred eighteen thousand, nine hundred seventy-seven".