1220575827 has 8 divisors (see below), whose sum is σ = 1713088960. Its totient is φ = 770889960.

The previous prime is 1220575817. The next prime is 1220575861. The reversal of 1220575827 is 7285750221.

It is a sphenic number, since it is the product of 3 distinct primes.

It is not a de Polignac number, because 1220575827 - 2²³ = 1212187219 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (1220575817) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 10706749 + ... + 10706862.

It is an arithmetic number, because the mean of its divisors is an integer number (214136120).

Almost surely, 2^1220575827 is an apocalyptic number.

1220575827 is a deficient number, since it is larger than the sum of its proper divisors (492513133).

1220575827 is a wasteful number, since it uses less digits than its factorization.

1220575827 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 21413633.

The product of its (nonzero) digits is 78400, while the sum is 39.

The square root of 1220575827 is about 34936.7403602569. The cubic root of 1220575827 is about 1068.6978152557.

The spelling of 1220575827 in words is "one billion, two hundred twenty million, five hundred seventy-five thousand, eight hundred twenty-seven".