1220600613 has 4 divisors (see below), whose sum is σ = 1627467488. Its totient is φ = 813733740.

The previous prime is 1220600609. The next prime is 1220600687. The reversal of 1220600613 is 3160060221.

It is a happy number.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is not a de Polignac number, because 1220600613 - 2² = 1220600609 is a prime.

It is a Duffinian number.

It is a Curzon number.

It is a self number, because there is not a number n which added to its sum of digits gives 1220600613.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1220600813) 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, 203433433 + ... + 203433438.

It is an arithmetic number, because the mean of its divisors is an integer number (406866872).

Almost surely, 2^1220600613 is an apocalyptic number.

It is an amenable number.

1220600613 is a deficient number, since it is larger than the sum of its proper divisors (406866875).

1220600613 is an equidigital number, since it uses as much as digits as its factorization.

1220600613 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 406866874.

The product of its (nonzero) digits is 432, while the sum is 21.

The square root of 1220600613 is about 34937.0950853101. The cubic root of 1220600613 is about 1068.7050491542.

Adding to 1220600613 its reverse (3160060221), we get a palindrome (4380660834).

The spelling of 1220600613 in words is "one billion, two hundred twenty million, six hundred thousand, six hundred thirteen".