2720497 has 4 divisors (see below), whose sum is σ = 2929780. Its totient is φ = 2511216.

The previous prime is 2720447. The next prime is 2720503. The reversal of 2720497 is 7940272.

It is a happy number.

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 361201 + 2359296 = 601^2 + 1536^2 .

It is a cyclic number.

It is not a de Polignac number, because 2720497 - 2¹¹ = 2718449 is a prime.

It is a super-2 number, since 2×2720497² = 14802207854018, which contains 22 as substring.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (2720447) 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, 104622 + ... + 104647.

It is an arithmetic number, because the mean of its divisors is an integer number (732445).

2^2720497 is an apocalyptic number.

It is an amenable number.

2720497 is a deficient number, since it is larger than the sum of its proper divisors (209283).

2720497 is a wasteful number, since it uses less digits than its factorization.

2720497 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 209282.

The product of its (nonzero) digits is 7056, while the sum is 31.

The square root of 2720497 is about 1649.3929186219. The cubic root of 2720497 is about 139.5991424484.

The spelling of 2720497 in words is "two million, seven hundred twenty thousand, four hundred ninety-seven".