420616837 has 4 divisors (see below), whose sum is σ = 420943936. Its totient is φ = 420289740.

The previous prime is 420616831. The next prime is 420616843. The reversal of 420616837 is 738616024.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is an interprime number because it is at equal distance from previous prime (420616831) and next prime (420616843).

It is a cyclic number.

It is not a de Polignac number, because 420616837 - 2³ = 420616829 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 420616796 and 420616805.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (420616831) 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, 161613 + ... + 164194.

It is an arithmetic number, because the mean of its divisors is an integer number (105235984).

Almost surely, 2^420616837 is an apocalyptic number.

It is an amenable number.

420616837 is a deficient number, since it is larger than the sum of its proper divisors (327099).

420616837 is a wasteful number, since it uses less digits than its factorization.

420616837 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 327098.

The product of its (nonzero) digits is 48384, while the sum is 37.

The square root of 420616837 is about 20508.9452922377. The cubic root of 420616837 is about 749.2536795132.

The spelling of 420616837 in words is "four hundred twenty million, six hundred sixteen thousand, eight hundred thirty-seven".