16625677 has 8 divisors (see below), whose sum is σ = 17846136. Its totient is φ = 15432192.

The previous prime is 16625663. The next prime is 16625681. The reversal of 16625677 is 77652661.

It is a happy number.

It can be written as a sum of positive squares in 4 ways, for example, as 1212201 + 15413476 = 1101^2 + 3926^2 .

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

It is not a de Polignac number, because 16625677 - 2⁷ = 16625549 is a prime.

It is a super-4 number, since 4×16625677⁴ (a number of 30 digits) contains 4444 as substring.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (16620677) 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 7 ways as a sum of consecutive naturals, for example, 5458 + ... + 7939.

It is an arithmetic number, because the mean of its divisors is an integer number (2230767).

Almost surely, 2^16625677 is an apocalyptic number.

16625677 is a gapful number since it is divisible by the number (17) formed by its first and last digit.

It is an amenable number.

16625677 is a deficient number, since it is larger than the sum of its proper divisors (1220459).

16625677 is a wasteful number, since it uses less digits than its factorization.

16625677 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 13487.

The product of its digits is 105840, while the sum is 40.

The square root of 16625677 is about 4077.4596257964. The cubic root of 16625677 is about 255.2269004393.

The spelling of 16625677 in words is "sixteen million, six hundred twenty-five thousand, six hundred seventy-seven".