1220967 has 16 divisors (see below), whose sum is σ = 1973760. Its totient is φ = 739800.

The previous prime is 1220953. The next prime is 1220969. The reversal of 1220967 is 7690221.

It is not a de Polignac number, because 1220967 - 2⁶ = 1220903 is a prime.

It is a Harshad number since it is a multiple of its sum of digits (27).

It is a self number, because there is not a number n which added to its sum of digits gives 1220967.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1220969) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 1759 + ... + 2352.

It is an arithmetic number, because the mean of its divisors is an integer number (123360).

2^1220967 is an apocalyptic number.

1220967 is a deficient number, since it is larger than the sum of its proper divisors (752793).

1220967 is a wasteful number, since it uses less digits than its factorization.

1220967 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4131 (or 4125 counting only the distinct ones).

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

The square root of 1220967 is about 1104.9737553444. The cubic root of 1220967 is about 106.8811969322.

It can be divided in two parts, 1220 and 967, that added together give a 7-th power (2187 = 3⁷).

The spelling of 1220967 in words is "one million, two hundred twenty thousand, nine hundred sixty-seven".