16577977 has 8 divisors (see below), whose sum is σ = 17885000. Its totient is φ = 15275520.

The previous prime is 16577969. The next prime is 16577989. The reversal of 16577977 is 77977561.

It can be written as a sum of positive squares in 4 ways, for example, as 609961 + 15968016 = 781^2 + 3996^2 .

It is a sphenic number, since it is the product of 3 distinct primes.

It is not a de Polignac number, because 16577977 - 2³ = 16577969 is a prime.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 16577977.

It is not an unprimeable number, because it can be changed into a prime (16577927) 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 7 ways as a sum of consecutive naturals, for example, 12649 + ... + 13897.

It is an arithmetic number, because the mean of its divisors is an integer number (2235625).

Almost surely, 2^16577977 is an apocalyptic number.

It is an amenable number.

16577977 is a deficient number, since it is larger than the sum of its proper divisors (1307023).

16577977 is a wasteful number, since it uses less digits than its factorization.

16577977 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2283.

The product of its digits is 648270, while the sum is 49.

The square root of 16577977 is about 4071.6061941204. The cubic root of 16577977 is about 254.9825798686.

The spelling of 16577977 in words is "sixteen million, five hundred seventy-seven thousand, nine hundred seventy-seven".