1220679 has 12 divisors (see below), whose sum is σ = 1840176. Its totient is φ = 778272.

The previous prime is 1220669. The next prime is 1220689. The reversal of 1220679 is 9760221.

It is an interprime number because it is at equal distance from previous prime (1220669) and next prime (1220689).

It is not a de Polignac number, because 1220679 - 2⁴ = 1220663 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1220669) 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, 2742 + ... + 3155.

It is an arithmetic number, because the mean of its divisors is an integer number (153348).

2^1220679 is an apocalyptic number.

1220679 is a deficient number, since it is larger than the sum of its proper divisors (619497).

1220679 is a wasteful number, since it uses less digits than its factorization.

1220679 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 5926 (or 5923 counting only the distinct ones).

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

The square root of 1220679 is about 1104.8434278213. The cubic root of 1220679 is about 106.8727926086.

The spelling of 1220679 in words is "one million, two hundred twenty thousand, six hundred seventy-nine".