2987723 has 4 divisors (see below), whose sum is σ = 3117648. Its totient is φ = 2857800.

The previous prime is 2987707. The next prime is 2987729. The reversal of 2987723 is 3277892.

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

It is a cyclic number.

It is not a de Polignac number, because 2987723 - 2⁴ = 2987707 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (2987729) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 64928 + ... + 64973.

It is an arithmetic number, because the mean of its divisors is an integer number (779412).

2^2987723 is an apocalyptic number.

2987723 is a gapful number since it is divisible by the number (23) formed by its first and last digit.

2987723 is a deficient number, since it is larger than the sum of its proper divisors (129925).

2987723 is a wasteful number, since it uses less digits than its factorization.

2987723 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 129924.

The product of its digits is 42336, while the sum is 38.

The square root of 2987723 is about 1728.5031096298. The cubic root of 2987723 is about 144.0279491789.

The spelling of 2987723 in words is "two million, nine hundred eighty-seven thousand, seven hundred twenty-three".