20677065 has 16 divisors (see below), whose sum is σ = 33504000. Its totient is φ = 10887552.

The previous prime is 20677061. The next prime is 20677067. The reversal of 20677065 is 56077602.

It is not a de Polignac number, because 20677065 - 2² = 20677061 is a prime.

It is not an unprimeable number, because it can be changed into a prime (20677061) 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, 7540 + ... + 9909.

It is an arithmetic number, because the mean of its divisors is an integer number (2094000).

Almost surely, 2^20677065 is an apocalyptic number.

It is an amenable number.

20677065 is a deficient number, since it is larger than the sum of its proper divisors (12826935).

20677065 is a wasteful number, since it uses less digits than its factorization.

20677065 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 17536.

The product of its (nonzero) digits is 17640, while the sum is 33.

The square root of 20677065 is about 4547.2040860291. The cubic root of 20677065 is about 274.4708944890.

The spelling of 20677065 in words is "twenty million, six hundred seventy-seven thousand, sixty-five".