20796777 has 16 divisors (see below), whose sum is σ = 31020160. Its totient is φ = 13770000.

The previous prime is 20796739. The next prime is 20796779. The reversal of 20796777 is 77769702.

It is not a de Polignac number, because 20796777 - 2¹⁴ = 20780393 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (20796779) 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, 1527 + ... + 6627.

It is an arithmetic number, because the mean of its divisors is an integer number (1938760).

Almost surely, 2^20796777 is an apocalyptic number.

20796777 is a gapful number since it is divisible by the number (27) formed by its first and last digit.

It is an amenable number.

20796777 is a deficient number, since it is larger than the sum of its proper divisors (10223383).

20796777 is a wasteful number, since it uses less digits than its factorization.

20796777 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 5261 (or 5255 counting only the distinct ones).

The product of its (nonzero) digits is 259308, while the sum is 45.

The square root of 20796777 is about 4560.3483419581. The cubic root of 20796777 is about 274.9995680434. Note that the first 3 decimals are identical.

The spelling of 20796777 in words is "twenty million, seven hundred ninety-six thousand, seven hundred seventy-seven".