420670677 has 32 divisors (see below), whose sum is σ = 659507200. Its totient is φ = 233513280.

The previous prime is 420670631. The next prime is 420670687. The reversal of 420670677 is 776076024.

It is a happy number.

It is not a de Polignac number, because 420670677 - 2¹¹ = 420668629 is a prime.

It is a super-3 number, since 3×420670677³ (a number of 27 digits) contains 333 as substring.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (420670687) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 178527 + ... + 180867.

It is an arithmetic number, because the mean of its divisors is an integer number (20609600).

Almost surely, 2^420670677 is an apocalyptic number.

It is an amenable number.

420670677 is a deficient number, since it is larger than the sum of its proper divisors (238836523).

420670677 is a wasteful number, since it uses less digits than its factorization.

420670677 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2593.

The product of its (nonzero) digits is 98784, while the sum is 39.

The square root of 420670677 is about 20510.2578482085. The cubic root of 420670677 is about 749.2856469267.

The spelling of 420670677 in words is "four hundred twenty million, six hundred seventy thousand, six hundred seventy-seven".