220651469 has 4 divisors (see below), whose sum is σ = 220801344. Its totient is φ = 220501596.

The previous prime is 220651439. The next prime is 220651499. The reversal of 220651469 is 964156022.

It is a happy number.

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 an interprime number because it is at equal distance from previous prime (220651439) and next prime (220651499).

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-220651469 is a prime.

It is a super-2 number, since 2×220651469² = 97374141543715922, which contains 22 as substring.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (220651439) 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, 72707 + ... + 75680.

It is an arithmetic number, because the mean of its divisors is an integer number (55200336).

Almost surely, 2^220651469 is an apocalyptic number.

It is an amenable number.

220651469 is a deficient number, since it is larger than the sum of its proper divisors (149875).

220651469 is a wasteful number, since it uses less digits than its factorization.

220651469 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 149874.

The product of its (nonzero) digits is 25920, while the sum is 35.

The square root of 220651469 is about 14854.3417558638. The cubic root of 220651469 is about 604.2763645081.

The spelling of 220651469 in words is "two hundred twenty million, six hundred fifty-one thousand, four hundred sixty-nine".