6420057 has 8 divisors (see below), whose sum is σ = 9782976. Its totient is φ = 3668592.

The previous prime is 6420053. The next prime is 6420061. The reversal of 6420057 is 7500246.

It is a happy number.

6420057 is digitally balanced in base 3, because in such base it contains all the possibile digits an equal number of times.

It is an interprime number because it is at equal distance from previous prime (6420053) and next prime (6420061).

It is a sphenic number, since it is the product of 3 distinct primes.

It is not a de Polignac number, because 6420057 - 2² = 6420053 is a prime.

It is not an unprimeable number, because it can be changed into a prime (6420053) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 152838 + ... + 152879.

It is an arithmetic number, because the mean of its divisors is an integer number (1222872).

Almost surely, 2^6420057 is an apocalyptic number.

It is an amenable number.

6420057 is a deficient number, since it is larger than the sum of its proper divisors (3362919).

6420057 is a wasteful number, since it uses less digits than its factorization.

6420057 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 305727.

The product of its (nonzero) digits is 1680, while the sum is 24.

The square root of 6420057 is about 2533.7831398918. The cubic root of 6420057 is about 185.8573018121.

The spelling of 6420057 in words is "six million, four hundred twenty thousand, fifty-seven".