16677540 has 72 divisors (see below), whose sum is σ = 55194048. Its totient is φ = 4042560.

The previous prime is 16677533. The next prime is 16677559. The reversal of 16677540 is 4577661.

It is a Harshad number since it is a multiple of its sum of digits (36).

It is a junction number, because it is equal to n+sod(n) for n = 16677495 and 16677504.

It is an unprimeable number.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 2232 + ... + 6191.

It is an arithmetic number, because the mean of its divisors is an integer number (766584).

Almost surely, 2^16677540 is an apocalyptic number.

16677540 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

16677540 is an abundant number, since it is smaller than the sum of its proper divisors (38516508).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

16677540 is a wasteful number, since it uses less digits than its factorization.

16677540 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 8449 (or 8444 counting only the distinct ones).

The product of its (nonzero) digits is 35280, while the sum is 36.

The square root of 16677540 is about 4083.8143934317. The cubic root of 16677540 is about 255.4920143082.

The spelling of 16677540 in words is "sixteen million, six hundred seventy-seven thousand, five hundred forty".