653245220 has 12 divisors (see below), whose sum is σ = 1371815004. Its totient is φ = 261298080.

The previous prime is 653245217. The next prime is 653245223. The reversal of 653245220 is 22542356.

It is an interprime number because it is at equal distance from previous prime (653245217) and next prime (653245223).

It can be written as a sum of positive squares in 2 ways, for example, as 239692324 + 413552896 = 15482^2 + 20336^2 .

It is not an unprimeable number, because it can be changed into a prime (653245223) 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, 16331111 + ... + 16331150.

It is an arithmetic number, because the mean of its divisors is an integer number (114317917).

Almost surely, 2^653245220 is an apocalyptic number.

It is an amenable number.

653245220 is an abundant number, since it is smaller than the sum of its proper divisors (718569784).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

653245220 is a wasteful number, since it uses less digits than its factorization.

653245220 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 32662270 (or 32662268 counting only the distinct ones).

The product of its (nonzero) digits is 14400, while the sum is 29.

The square root of 653245220 is about 25558.6623280640. The cubic root of 653245220 is about 867.6783212722.

Adding to 653245220 its reverse (22542356), we get a palindrome (675787576).

The spelling of 653245220 in words is "six hundred fifty-three million, two hundred forty-five thousand, two hundred twenty".