420572660 has 24 divisors (see below), whose sum is σ = 911694336. Its totient is φ = 162802080.

The previous prime is 420572653. The next prime is 420572693. The reversal of 420572660 is 66275024.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 338552 + ... + 339791.

It is an arithmetic number, because the mean of its divisors is an integer number (37987264).

Almost surely, 2^420572660 is an apocalyptic number.

It is an amenable number.

420572660 is an abundant number, since it is smaller than the sum of its proper divisors (491121676).

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

420572660 is a wasteful number, since it uses less digits than its factorization.

420572660 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 678383 (or 678381 counting only the distinct ones).

The product of its (nonzero) digits is 20160, while the sum is 32.

The square root of 420572660 is about 20507.8682461147. The cubic root of 420572660 is about 749.2274474529.

The spelling of 420572660 in words is "four hundred twenty million, five hundred seventy-two thousand, six hundred sixty".