1627620613 has 4 divisors (see below), whose sum is σ = 1723363020. Its totient is φ = 1531878208.

The previous prime is 1627620607. The next prime is 1627620661. The reversal of 1627620613 is 3160267261.

It is a happy number.

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 1480556484 + 147064129 = 38478^2 + 12127^2 .

It is a cyclic number.

It is not a de Polignac number, because 1627620613 - 2²⁵ = 1594066181 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1627620913) 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, 47871178 + ... + 47871211.

It is an arithmetic number, because the mean of its divisors is an integer number (430840755).

Almost surely, 2^1627620613 is an apocalyptic number.

It is an amenable number.

1627620613 is a deficient number, since it is larger than the sum of its proper divisors (95742407).

1627620613 is an equidigital number, since it uses as much as digits as its factorization.

1627620613 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 95742406.

The product of its (nonzero) digits is 18144, while the sum is 34.

The square root of 1627620613 is about 40343.7803508794. The cubic root of 1627620613 is about 1176.2989980955.

Adding to 1627620613 its reverse (3160267261), we get a palindrome (4787887874).

The spelling of 1627620613 in words is "one billion, six hundred twenty-seven million, six hundred twenty thousand, six hundred thirteen".