2720097481 has 4 divisors (see below), whose sum is σ = 2786441364. Its totient is φ = 2653753600.

The previous prime is 2720097469. The next prime is 2720097487. The reversal of 2720097481 is 1847900272.

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 89946256 + 2630151225 = 9484^2 + 51285^2 .

It is a cyclic number.

It is not a de Polignac number, because 2720097481 - 2⁷ = 2720097353 is a prime.

It is a super-2 number, since 2×2720097481² = 14797860612285090722, which contains 22 as substring.

It is a Smith number, since the sum of its digits (40) coincides with the sum of the digits of its prime factors. Since it is squarefree, it is also a hoax number.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (2720097487) 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, 33171880 + ... + 33171961.

It is an arithmetic number, because the mean of its divisors is an integer number (696610341).

Almost surely, 2^2720097481 is an apocalyptic number.

It is an amenable number.

2720097481 is a deficient number, since it is larger than the sum of its proper divisors (66343883).

2720097481 is an equidigital number, since it uses as much as digits as its factorization.

2720097481 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 66343882.

The product of its (nonzero) digits is 56448, while the sum is 40.

The square root of 2720097481 is about 52154.5537896740. The cubic root of 2720097481 is about 1395.9230849611.

The spelling of 2720097481 in words is "two billion, seven hundred twenty million, ninety-seven thousand, four hundred eighty-one".