1220857627 has 4 divisors (see below), whose sum is σ = 1331844696. Its totient is φ = 1109870560.

The previous prime is 1220857607. The next prime is 1220857633. The reversal of 1220857627 is 7267580221.

It is a happy number.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is not a de Polignac number, because 1220857627 - 2¹⁹ = 1220333339 is a prime.

It is a super-2 number, since 2×1220857627² = 2980986690808142258, which contains 22 as substring.

It is a Smith number, since the sum of its digits (40) coincides with the sum of the digits of its prime factors. Since it is squarefree, it is also a hoax number.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 1220857627.

It is not an unprimeable number, because it can be changed into a prime (1220857607) 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, 55493518 + ... + 55493539.

It is an arithmetic number, because the mean of its divisors is an integer number (332961174).

Almost surely, 2^1220857627 is an apocalyptic number.

1220857627 is a deficient number, since it is larger than the sum of its proper divisors (110987069).

1220857627 is a wasteful number, since it uses less digits than its factorization.

1220857627 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 110987068.

The product of its (nonzero) digits is 94080, while the sum is 40.

The square root of 1220857627 is about 34940.7731311143. The cubic root of 1220857627 is about 1068.7800540002.

The spelling of 1220857627 in words is "one billion, two hundred twenty million, eight hundred fifty-seven thousand, six hundred twenty-seven".