7280840613 has 8 divisors (see below), whose sum is σ = 9709546176. Its totient is φ = 4853014400.

The previous prime is 7280840591. The next prime is 7280840629. The reversal of 7280840613 is 3160480827.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 7280840613 - 2⁶ = 7280840549 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (7280840663) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 200268 + ... + 233813.

It is an arithmetic number, because the mean of its divisors is an integer number (1213693272).

Almost surely, 2^7280840613 is an apocalyptic number.

It is an amenable number.

7280840613 is a deficient number, since it is larger than the sum of its proper divisors (2428705563).

7280840613 is a wasteful number, since it uses less digits than its factorization.

7280840613 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 439675.

The product of its (nonzero) digits is 64512, while the sum is 39.

The square root of 7280840613 is about 85327.8419567728. The cubic root of 7280840613 is about 1938.1788106838.

The spelling of 7280840613 in words is "seven billion, two hundred eighty million, eight hundred forty thousand, six hundred thirteen".