20677694 has 16 divisors (see below), whose sum is σ = 31900176. Its totient is φ = 10046400.

The previous prime is 20677693. The next prime is 20677717. The reversal of 20677694 is 49677602.

It is a Harshad number since it is a multiple of its sum of digits (41).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (20677693) 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, 37529 + ... + 38075.

It is an arithmetic number, because the mean of its divisors is an integer number (1993761).

Almost surely, 2^20677694 is an apocalyptic number.

20677694 is a deficient number, since it is larger than the sum of its proper divisors (11222482).

20677694 is a wasteful number, since it uses less digits than its factorization.

20677694 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1051.

The product of its (nonzero) digits is 127008, while the sum is 41.

The square root of 20677694 is about 4547.2732488822. The cubic root of 20677694 is about 274.4736776120.

The spelling of 20677694 in words is "twenty million, six hundred seventy-seven thousand, six hundred ninety-four".