7620067849 has 3 divisors (see below), whose sum is σ = 7620155143. Its totient is φ = 7619980556.

The previous prime is 7620067783. The next prime is 7620067859. The reversal of 7620067849 is 9487600267.

The square root of 7620067849 is 87293.

It is a perfect power (a square), and thus also a powerful number.

It is a semiprime because it is the product of two primes, and also a brilliant number, because the two primes have the same length.

It can be written as a sum of positive squares in only one way, i.e., 7124204025 + 495863824 = 84405^2 + 22268^2 .

It is not a de Polignac number, because 7620067849 - 2¹⁵ = 7620035081 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (7620067859) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 2 ways as a sum of consecutive naturals, for example, 43647 + ... + 130939.

Almost surely, 2^7620067849 is an apocalyptic number.

7620067849 is the 87293-rd square number.

7620067849 is the 43647-th centered octagonal number.

It is an amenable number.

7620067849 is a deficient number, since it is larger than the sum of its proper divisors (87294).

7620067849 is an frugal number, since it uses more digits than its factorization.

7620067849 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 174586 (or 87293 counting only the distinct ones).

The product of its (nonzero) digits is 1016064, while the sum is 49.

The cubic root of 7620067849 is about 1967.8241197207.

Multiplying 7620067849 by its sum of digits (49), we get a square (373383324601 = 611051²).

The spelling of 7620067849 in words is "seven billion, six hundred twenty million, sixty-seven thousand, eight hundred forty-nine".