1420685563 has 18 divisors (see below), whose sum is σ = 1658881868. Its totient is φ = 1215529920.

The previous prime is 1420685561. The next prime is 1420685569. The reversal of 1420685563 is 3655860241.

It is not a de Polignac number, because 1420685563 - 2¹ = 1420685561 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (1420685561) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 17 ways as a sum of consecutive naturals, for example, 14656 + ... + 55282.

Almost surely, 2^1420685563 is an apocalyptic number.

1420685563 is a deficient number, since it is larger than the sum of its proper divisors (238196305).

1420685563 is a wasteful number, since it uses less digits than its factorization.

1420685563 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 40683 (or 40655 counting only the distinct ones).

The product of its (nonzero) digits is 172800, while the sum is 40.

The square root of 1420685563 is about 37691.9827416919. The cubic root of 1420685563 is about 1124.1717196788.

The spelling of 1420685563 in words is "one billion, four hundred twenty million, six hundred eighty-five thousand, five hundred sixty-three".