7611617620 has 24 divisors (see below), whose sum is σ = 15988548744. Its totient is φ = 3043856256.

The previous prime is 7611617603. The next prime is 7611617627. The reversal of 7611617620 is 267161167.

It can be written as a sum of positive squares in 4 ways, for example, as 1616522436 + 5995095184 = 40206^2 + 77428^2 .

It is a self number, because there is not a number n which added to its sum of digits gives 7611617620.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (7611617627) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 32842 + ... + 127678.

It is an arithmetic number, because the mean of its divisors is an integer number (666189531).

Almost surely, 2^7611617620 is an apocalyptic number.

It is an amenable number.

7611617620 is an abundant number, since it is smaller than the sum of its proper divisors (8376931124).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

7611617620 is a wasteful number, since it uses less digits than its factorization.

7611617620 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 98859 (or 98857 counting only the distinct ones).

The product of its (nonzero) digits is 21168, while the sum is 37.

The square root of 7611617620 is about 87244.5850468669. The cubic root of 7611617620 is about 1967.0964483807.

Adding to 7611617620 its reverse (267161167), we get a palindrome (7878778787).

The spelling of 7611617620 in words is "seven billion, six hundred eleven million, six hundred seventeen thousand, six hundred twenty".