20677486 has 4 divisors (see below), whose sum is σ = 31016232. Its totient is φ = 10338742.

The previous prime is 20677477. The next prime is 20677507. The reversal of 20677486 is 68477602.

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

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 5169370 + ... + 5169373.

It is an arithmetic number, because the mean of its divisors is an integer number (7754058).

Almost surely, 2^20677486 is an apocalyptic number.

20677486 is a deficient number, since it is larger than the sum of its proper divisors (10338746).

20677486 is a wasteful number, since it uses less digits than its factorization.

20677486 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 10338745.

The product of its (nonzero) digits is 112896, while the sum is 40.

The square root of 20677486 is about 4547.2503779757. The cubic root of 20677486 is about 274.4727572850.

The spelling of 20677486 in words is "twenty million, six hundred seventy-seven thousand, four hundred eighty-six".