7661303020 has 24 divisors (see below), whose sum is σ = 18387127584. Its totient is φ = 2626732416.

The previous prime is 7661303003. The next prime is 7661303033. The reversal of 7661303020 is 203031667.

It is a super-2 number, since 2×7661303020² (a number of 21 digits) contains 22 as substring.

It is a Harshad number since it is a multiple of its sum of digits (28).

It is a self number, because there is not a number n which added to its sum of digits gives 7661303020.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 27361657 + ... + 27361936.

It is an arithmetic number, because the mean of its divisors is an integer number (766130316).

Almost surely, 2^7661303020 is an apocalyptic number.

7661303020 is a gapful number since it is divisible by the number (70) formed by its first and last digit.

It is an amenable number.

7661303020 is an abundant number, since it is smaller than the sum of its proper divisors (10725824564).

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

7661303020 is a wasteful number, since it uses less digits than its factorization.

7661303020 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 54723609 (or 54723607 counting only the distinct ones).

The product of its (nonzero) digits is 4536, while the sum is 28.

The square root of 7661303020 is about 87528.8696373945. The cubic root of 7661303020 is about 1971.3672918460.

Adding to 7661303020 its reverse (203031667), we get a palindrome (7864334687).

The spelling of 7661303020 in words is "seven billion, six hundred sixty-one million, three hundred three thousand, twenty".