20770814 has 4 divisors (see below), whose sum is σ = 31156224. Its totient is φ = 10385406.

The previous prime is 20770807. The next prime is 20770823. The reversal of 20770814 is 41807702.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 41807702 = 2 ⋅20903851.

It is a Curzon number.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 5192702 + ... + 5192705.

It is an arithmetic number, because the mean of its divisors is an integer number (7789056).

Almost surely, 2^20770814 is an apocalyptic number.

20770814 is a deficient number, since it is larger than the sum of its proper divisors (10385410).

20770814 is a wasteful number, since it uses less digits than its factorization.

20770814 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 10385409.

The product of its (nonzero) digits is 3136, while the sum is 29.

The square root of 20770814 is about 4557.5008502468. The cubic root of 20770814 is about 274.8850825633.

The spelling of 20770814 in words is "twenty million, seven hundred seventy thousand, eight hundred fourteen".