2720993 has 4 divisors (see below), whose sum is σ = 2968368. Its totient is φ = 2473620.

The previous prime is 2720987. The next prime is 2720999. The reversal of 2720993 is 3990272.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is an interprime number because it is at equal distance from previous prime (2720987) and next prime (2720999).

It is a cyclic number.

It is not a de Polignac number, because 2720993 - 2⁸ = 2720737 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (2720999) 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, 123671 + ... + 123692.

It is an arithmetic number, because the mean of its divisors is an integer number (742092).

2^2720993 is an apocalyptic number.

It is an amenable number.

2720993 is a deficient number, since it is larger than the sum of its proper divisors (247375).

2720993 is a wasteful number, since it uses less digits than its factorization.

2720993 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 247374.

The product of its (nonzero) digits is 6804, while the sum is 32.

The square root of 2720993 is about 1649.5432701206. The cubic root of 2720993 is about 139.6076258208.

The spelling of 2720993 in words is "two million, seven hundred twenty thousand, nine hundred ninety-three".