420569648 has 10 divisors (see below), whose sum is σ = 814853724. Its totient is φ = 210284816.

The previous prime is 420569623. The next prime is 420569657. The reversal of 420569648 is 846965024.

It is a junction number, because it is equal to n+sod(n) for n = 420569599 and 420569608.

It is an unprimeable number.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 13142786 + ... + 13142817.

Almost surely, 2^420569648 is an apocalyptic number.

It is an amenable number.

420569648 is a deficient number, since it is larger than the sum of its proper divisors (394284076).

420569648 is a wasteful number, since it uses less digits than its factorization.

420569648 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 26285611 (or 26285605 counting only the distinct ones).

The product of its (nonzero) digits is 414720, while the sum is 44.

The square root of 420569648 is about 20507.7948107543. The cubic root of 420569648 is about 749.2256588770.

The spelling of 420569648 in words is "four hundred twenty million, five hundred sixty-nine thousand, six hundred forty-eight".