420376687 has 2 divisors, whose sum is σ = 420376688. Its totient is φ = 420376686.

The previous prime is 420376673. The next prime is 420376753. The reversal of 420376687 is 786673024.

It is a happy number.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 420376687 - 2¹⁹ = 419852399 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (420376787) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 210188343 + 210188344.

It is an arithmetic number, because the mean of its divisors is an integer number (210188344).

Almost surely, 2^420376687 is an apocalyptic number.

420376687 is a deficient number, since it is larger than the sum of its proper divisors (1).

420376687 is an equidigital number, since it uses as much as digits as its factorization.

420376687 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 338688, while the sum is 43.

The square root of 420376687 is about 20503.0896939949. The cubic root of 420376687 is about 749.1110576063. Note that the first 3 decimals are identical.

The spelling of 420376687 in words is "four hundred twenty million, three hundred seventy-six thousand, six hundred eighty-seven".