6420974 has 32 divisors (see below), whose sum is σ = 11750400. Its totient is φ = 2570400.

The previous prime is 6420971. The next prime is 6420989. The reversal of 6420974 is 4790246.

It is a Curzon number.

It is a self number, because there is not a number n which added to its sum of digits gives 6420974.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (6420971) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 26747 + ... + 26985.

It is an arithmetic number, because the mean of its divisors is an integer number (367200).

Almost surely, 2^6420974 is an apocalyptic number.

6420974 is a deficient number, since it is larger than the sum of its proper divisors (5329426).

6420974 is a wasteful number, since it uses less digits than its factorization.

6420974 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 368.

The product of its (nonzero) digits is 12096, while the sum is 32.

The square root of 6420974 is about 2533.9640881433. The cubic root of 6420974 is about 185.8661502814.

The spelling of 6420974 in words is "six million, four hundred twenty thousand, nine hundred seventy-four".