20466677 has 16 divisors (see below), whose sum is σ = 25694592. Its totient is φ = 15837120.

The previous prime is 20466671. The next prime is 20466679. The reversal of 20466677 is 77666402.

It is a happy number.

It is a cyclic number.

It is not a de Polignac number, because 20466677 - 2⁶ = 20466613 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 20466677.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (20466671) 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, 11243 + ... + 12935.

It is an arithmetic number, because the mean of its divisors is an integer number (1605912).

Almost surely, 2^20466677 is an apocalyptic number.

It is an amenable number.

20466677 is a deficient number, since it is larger than the sum of its proper divisors (5227915).

20466677 is a wasteful number, since it uses less digits than its factorization.

20466677 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1868.

The product of its (nonzero) digits is 84672, while the sum is 38.

The square root of 20466677 is about 4524.0111626741. The cubic root of 20466677 is about 273.5368104487.

The spelling of 20466677 in words is "twenty million, four hundred sixty-six thousand, six hundred seventy-seven".