420500677 has 4 divisors (see below), whose sum is σ = 421705900. Its totient is φ = 419295456.

The previous prime is 420500669. The next prime is 420500687. The reversal of 420500677 is 776005024.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in 2 ways, for example, as 335842276 + 84658401 = 18326^2 + 9201^2 .

It is a cyclic number.

It is not a de Polignac number, because 420500677 - 2³ = 420500669 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (420500617) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 602088 + ... + 602785.

It is an arithmetic number, because the mean of its divisors is an integer number (105426475).

Almost surely, 2^420500677 is an apocalyptic number.

It is an amenable number.

420500677 is a deficient number, since it is larger than the sum of its proper divisors (1205223).

420500677 is a wasteful number, since it uses less digits than its factorization.

420500677 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1205222.

The product of its (nonzero) digits is 11760, while the sum is 31.

The square root of 420500677 is about 20506.1131616891. The cubic root of 420500677 is about 749.1847004070.

The spelling of 420500677 in words is "four hundred twenty million, five hundred thousand, six hundred seventy-seven".