20797345 has 8 divisors (see below), whose sum is σ = 25107264. Its totient is φ = 16537584.

The previous prime is 20797339. The next prime is 20797349. The reversal of 20797345 is 54379702.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 20797345 - 2¹¹ = 20795297 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (20797349) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 11619 + ... + 13288.

It is an arithmetic number, because the mean of its divisors is an integer number (3138408).

Almost surely, 2^20797345 is an apocalyptic number.

It is an amenable number.

20797345 is a deficient number, since it is larger than the sum of its proper divisors (4309919).

20797345 is a wasteful number, since it uses less digits than its factorization.

20797345 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 25079.

The product of its (nonzero) digits is 52920, while the sum is 37.

The square root of 20797345 is about 4560.4106174773. The cubic root of 20797345 is about 275.0020716097.

The spelling of 20797345 in words is "twenty million, seven hundred ninety-seven thousand, three hundred forty-five".