20677354 has 4 divisors (see below), whose sum is σ = 31016034. Its totient is φ = 10338676.

The previous prime is 20677351. The next prime is 20677357. The reversal of 20677354 is 45377602.

It is a happy number.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 45377602 = 2 ⋅22688801.

It is an interprime number because it is at equal distance from previous prime (20677351) and next prime (20677357).

It can be written as a sum of positive squares in only one way, i.e., 18792225 + 1885129 = 4335^2 + 1373^2 .

It is not an unprimeable number, because it can be changed into a prime (20677351) 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 as a sum of consecutive naturals, namely, 5169337 + ... + 5169340.

Almost surely, 2^20677354 is an apocalyptic number.

20677354 is a deficient number, since it is larger than the sum of its proper divisors (10338680).

20677354 is a wasteful number, since it uses less digits than its factorization.

20677354 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 10338679.

The product of its (nonzero) digits is 35280, while the sum is 34.

The square root of 20677354 is about 4547.2358636869. The cubic root of 20677354 is about 274.4721732282.

The spelling of 20677354 in words is "twenty million, six hundred seventy-seven thousand, three hundred fifty-four".