1220470753 has 4 divisors (see below), whose sum is σ = 1220801428. Its totient is φ = 1220140080.

The previous prime is 1220470733. The next prime is 1220470777. The reversal of 1220470753 is 3570740221.

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

It can be written as a sum of positive squares in 2 ways, for example, as 1016780769 + 203689984 = 31887^2 + 14272^2 .

It is a cyclic number.

It is not a de Polignac number, because 1220470753 - 2⁹ = 1220470241 is a prime.

It is a super-3 number, since 3×1220470753³ (a number of 28 digits) contains 333 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (1220470723) 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, 159738 + ... + 167203.

It is an arithmetic number, because the mean of its divisors is an integer number (305200357).

Almost surely, 2^1220470753 is an apocalyptic number.

It is an amenable number.

1220470753 is a deficient number, since it is larger than the sum of its proper divisors (330675).

1220470753 is an equidigital number, since it uses as much as digits as its factorization.

1220470753 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 330674.

The product of its (nonzero) digits is 11760, while the sum is 31.

The square root of 1220470753 is about 34935.2365527987. The cubic root of 1220470753 is about 1068.6671478789.

The spelling of 1220470753 in words is "one billion, two hundred twenty million, four hundred seventy thousand, seven hundred fifty-three".