1977000723 has 36 divisors (see below), whose sum is σ = 3013731720. Its totient is φ = 1280880216.

The previous prime is 1977000721. The next prime is 1977000743. The reversal of 1977000723 is 3270007791.

It is a powerful number, because all its prime factors have an exponent greater than 1 and also an Achilles number because it is not a perfect power.

It is not a de Polignac number, because 1977000723 - 2¹ = 1977000721 is a prime.

It is not an unprimeable number, because it can be changed into a prime (1977000721) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 35 ways as a sum of consecutive naturals, for example, 9934578 + ... + 9934776.

It is an arithmetic number, because the mean of its divisors is an integer number (83714770).

Almost surely, 2^1977000723 is an apocalyptic number.

1977000723 is a deficient number, since it is larger than the sum of its proper divisors (1036730997).

1977000723 is an frugal number, since it uses more digits than its factorization.

1977000723 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 493 (or 245 counting only the distinct ones).

The product of its (nonzero) digits is 18522, while the sum is 36.

The square root of 1977000723 is about 44463.4762811006. The cubic root of 1977000723 is about 1255.0728724953.

The spelling of 1977000723 in words is "one billion, nine hundred seventy-seven million, seven hundred twenty-three", and thus it is an aban number.