20770343 has 4 divisors (see below), whose sum is σ = 22658568. Its totient is φ = 18882120.

The previous prime is 20770339. The next prime is 20770349. The reversal of 20770343 is 34307702.

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

It is a cyclic number.

It is not a de Polignac number, because 20770343 - 2² = 20770339 is a prime.

It is a super-4 number, since 4×20770343⁴ (a number of 30 digits) contains 4444 as substring. Note that it is a super-d number also for d = 3.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (20770349) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 944096 + ... + 944117.

It is an arithmetic number, because the mean of its divisors is an integer number (5664642).

Almost surely, 2^20770343 is an apocalyptic number.

20770343 is a deficient number, since it is larger than the sum of its proper divisors (1888225).

20770343 is a wasteful number, since it uses less digits than its factorization.

20770343 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1888224.

The product of its (nonzero) digits is 3528, while the sum is 26.

The square root of 20770343 is about 4557.4491768971. The cubic root of 20770343 is about 274.8830047784.

The spelling of 20770343 in words is "twenty million, seven hundred seventy thousand, three hundred forty-three".