20077671 has 4 divisors (see below), whose sum is σ = 26770232. Its totient is φ = 13385112.

The previous prime is 20077639. The next prime is 20077693. The reversal of 20077671 is 17677002.

It is a happy number.

It is a semiprime because it is the product of two primes.

It is not a de Polignac number, because 20077671 - 2⁵ = 20077639 is a prime.

It is a super-2 number, since 2×20077671² = 806225745568482, which contains 22 as substring.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (20077171) 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 3 ways as a sum of consecutive naturals, for example, 3346276 + ... + 3346281.

It is an arithmetic number, because the mean of its divisors is an integer number (6692558).

Almost surely, 2^20077671 is an apocalyptic number.

20077671 is a deficient number, since it is larger than the sum of its proper divisors (6692561).

20077671 is an equidigital number, since it uses as much as digits as its factorization.

20077671 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 6692560.

The product of its (nonzero) digits is 4116, while the sum is 30.

The square root of 20077671 is about 4480.8114220529. The cubic root of 20077671 is about 271.7926936480.

The spelling of 20077671 in words is "twenty million, seventy-seven thousand, six hundred seventy-one".