16920577 has 8 divisors (see below), whose sum is σ = 17402112. Its totient is φ = 16442400.

The previous prime is 16920569. The next prime is 16920587. The reversal of 16920577 is 77502961.

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

It is a cyclic number.

It is not a de Polignac number, because 16920577 - 2³ = 16920569 is a prime.

It is a super-3 number, since 3×16920577³ (a number of 23 digits) contains 333 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (16920587) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (5) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 12088 + ... + 13414.

It is an arithmetic number, because the mean of its divisors is an integer number (2175264).

Almost surely, 2^16920577 is an apocalyptic number.

It is an amenable number.

16920577 is a deficient number, since it is larger than the sum of its proper divisors (481535).

16920577 is a wasteful number, since it uses less digits than its factorization.

16920577 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1679.

The product of its (nonzero) digits is 26460, while the sum is 37.

The square root of 16920577 is about 4113.4628963928. The cubic root of 16920577 is about 256.7271046370.

The spelling of 16920577 in words is "sixteen million, nine hundred twenty thousand, five hundred seventy-seven".