6450870 has 32 divisors (see below), whose sum is σ = 15642720. Its totient is φ = 1702400.

The previous prime is 6450863. The next prime is 6450877. The reversal of 6450870 is 780546.

It is a happy number.

It is an interprime number because it is at equal distance from previous prime (6450863) and next prime (6450877).

It is a super-2 number, since 2×6450870² = 83227447513800, which contains 22 as substring.

It is a Harshad number since it is a multiple of its sum of digits (30).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (6450877) 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 15 ways as a sum of consecutive naturals, for example, 1966 + ... + 4094.

It is an arithmetic number, because the mean of its divisors is an integer number (488835).

Almost surely, 2^6450870 is an apocalyptic number.

6450870 is an abundant number, since it is smaller than the sum of its proper divisors (9191850).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

6450870 is a wasteful number, since it uses less digits than its factorization.

6450870 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2240.

The product of its (nonzero) digits is 6720, while the sum is 30.

The square root of 6450870 is about 2539.8562951474. The cubic root of 6450870 is about 186.1541674761.

The spelling of 6450870 in words is "six million, four hundred fifty thousand, eight hundred seventy".