16694977 has 16 divisors (see below), whose sum is σ = 19071360. Its totient is φ = 14487552.

The previous prime is 16694963. The next prime is 16694989. The reversal of 16694977 is 77949661.

It is a cyclic number.

It is not a de Polignac number, because 16694977 - 2²³ = 8306369 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 16694977.

It is not an unprimeable number, because it can be changed into a prime (16694927) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 63348 + ... + 63610.

It is an arithmetic number, because the mean of its divisors is an integer number (1191960).

Almost surely, 2^16694977 is an apocalyptic number.

It is an amenable number.

16694977 is a deficient number, since it is larger than the sum of its proper divisors (2376383).

16694977 is a wasteful number, since it uses less digits than its factorization.

16694977 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 552.

The product of its digits is 571536, while the sum is 49.

The square root of 16694977 is about 4085.9487270400. The cubic root of 16694977 is about 255.5810254878.

It can be divided in two parts, 16694 and 977, that added together give a palindrome (17671).

The spelling of 16694977 in words is "sixteen million, six hundred ninety-four thousand, nine hundred seventy-seven".