2720558 has 4 divisors (see below), whose sum is σ = 4080840. Its totient is φ = 1360278.

The previous prime is 2720551. The next prime is 2720563. The reversal of 2720558 is 8550272.

It is a semiprime because it is the product of two primes.

It is a super-3 number, since 3×2720558³ = 60408106387511943336, which contains 333 as substring.

It is a self number, because there is not a number n which added to its sum of digits gives 2720558.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (2720551) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 680138 + ... + 680141.

It is an arithmetic number, because the mean of its divisors is an integer number (1020210).

2^2720558 is an apocalyptic number.

2720558 is a deficient number, since it is larger than the sum of its proper divisors (1360282).

2720558 is a wasteful number, since it uses less digits than its factorization.

2720558 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1360281.

The product of its (nonzero) digits is 5600, while the sum is 29.

The square root of 2720558 is about 1649.4114101703. The cubic root of 2720558 is about 139.6001858220.

The spelling of 2720558 in words is "two million, seven hundred twenty thousand, five hundred fifty-eight".