653542420 has 12 divisors (see below), whose sum is σ = 1372439124. Its totient is φ = 261416960.

The previous prime is 653542343. The next prime is 653542427. The reversal of 653542420 is 24245356.

It can be written as a sum of positive squares in 2 ways, for example, as 200618896 + 452923524 = 14164^2 + 21282^2 .

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (653542427) 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, 16338541 + ... + 16338580.

It is an arithmetic number, because the mean of its divisors is an integer number (114369927).

Almost surely, 2^653542420 is an apocalyptic number.

It is an amenable number.

653542420 is an abundant number, since it is smaller than the sum of its proper divisors (718896704).

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

653542420 is a wasteful number, since it uses less digits than its factorization.

653542420 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 32677130 (or 32677128 counting only the distinct ones).

The product of its (nonzero) digits is 28800, while the sum is 31.

The square root of 653542420 is about 25564.4757427177. The cubic root of 653542420 is about 867.8098874344.

Adding to 653542420 its reverse (24245356), we get a palindrome (677787776).

The spelling of 653542420 in words is "six hundred fifty-three million, five hundred forty-two thousand, four hundred twenty".