1220964 has 12 divisors (see below), whose sum is σ = 2848944. Its totient is φ = 406984.

The previous prime is 1220953. The next prime is 1220969. The reversal of 1220964 is 4690221.

It is a tau number, because it is divible by the number of its divisors (12).

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 3 ways as a sum of consecutive naturals, for example, 50862 + ... + 50885.

It is an arithmetic number, because the mean of its divisors is an integer number (237412).

2^1220964 is an apocalyptic number.

It is an amenable number.

1220964 is an abundant number, since it is smaller than the sum of its proper divisors (1627980).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

1220964 is a wasteful number, since it uses less digits than its factorization.

1220964 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 101754 (or 101752 counting only the distinct ones).

The product of its (nonzero) digits is 864, while the sum is 24.

The square root of 1220964 is about 1104.9723978453. The cubic root of 1220964 is about 106.8811093939.

The spelling of 1220964 in words is "one million, two hundred twenty thousand, nine hundred sixty-four".