420670699 has 4 divisors (see below), whose sum is σ = 428607936. Its totient is φ = 412733464.

The previous prime is 420670687. The next prime is 420670703. The reversal of 420670699 is 996076024.

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

It is a cyclic number.

It is not a de Polignac number, because 420670699 - 2²⁵ = 387116267 is a prime.

It is a super-3 number, since 3×420670699³ (a number of 27 digits) contains 333 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (420670399) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 3968539 + ... + 3968644.

It is an arithmetic number, because the mean of its divisors is an integer number (107151984).

Almost surely, 2^420670699 is an apocalyptic number.

420670699 is a deficient number, since it is larger than the sum of its proper divisors (7937237).

420670699 is an equidigital number, since it uses as much as digits as its factorization.

420670699 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 7937236.

The product of its (nonzero) digits is 163296, while the sum is 43.

The square root of 420670699 is about 20510.2583845255. The cubic root of 420670699 is about 749.2856599886.

The spelling of 420670699 in words is "four hundred twenty million, six hundred seventy thousand, six hundred ninety-nine".