20774677 has 12 divisors (see below), whose sum is σ = 26364096. Its totient is φ = 16187640.

The previous prime is 20774653. The next prime is 20774683. The reversal of 20774677 is 77647702.

It is not a de Polignac number, because 20774677 - 2¹⁹ = 20250389 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (20774627) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 18733 + ... + 19810.

It is an arithmetic number, because the mean of its divisors is an integer number (2197008).

Almost surely, 2^20774677 is an apocalyptic number.

It is an amenable number.

20774677 is a deficient number, since it is larger than the sum of its proper divisors (5589419).

20774677 is a wasteful number, since it uses less digits than its factorization.

20774677 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 38568 (or 38561 counting only the distinct ones).

The product of its (nonzero) digits is 115248, while the sum is 40.

The square root of 20774677 is about 4557.9246373761. The cubic root of 20774677 is about 274.9021227437.

The spelling of 20774677 in words is "twenty million, seven hundred seventy-four thousand, six hundred seventy-seven".