220293897 has 4 divisors (see below), whose sum is σ = 293725200. Its totient is φ = 146862596.

The previous prime is 220293883. The next prime is 220293907. The reversal of 220293897 is 798392022.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is not a de Polignac number, because 220293897 - 2⁴ = 220293881 is a prime.

It is not an unprimeable number, because it can be changed into a prime (220293817) 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, 36715647 + ... + 36715652.

It is an arithmetic number, because the mean of its divisors is an integer number (73431300).

Almost surely, 2^220293897 is an apocalyptic number.

It is an amenable number.

220293897 is a deficient number, since it is larger than the sum of its proper divisors (73431303).

220293897 is an equidigital number, since it uses as much as digits as its factorization.

220293897 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 73431302.

The product of its (nonzero) digits is 108864, while the sum is 42.

The square root of 220293897 is about 14842.3009334806. The cubic root of 220293897 is about 603.9497723316.

The spelling of 220293897 in words is "two hundred twenty million, two hundred ninety-three thousand, eight hundred ninety-seven".