6261390 has 48 divisors (see below), whose sum is σ = 16848000. Its totient is φ = 1611456.

The previous prime is 6261383. The next prime is 6261391. The reversal of 6261390 is 931626.

It is a happy number.

6261390 is a `hidden beast` number, since 626 + 1 + 39 + 0 = 666.

It is a Curzon number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (6261391) 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 23 ways as a sum of consecutive naturals, for example, 1411 + ... + 3809.

It is an arithmetic number, because the mean of its divisors is an integer number (351000).

Almost surely, 2^6261390 is an apocalyptic number.

It is a practical number, because each smaller number is the sum of distinct divisors of 6261390, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (8424000).

6261390 is an abundant number, since it is smaller than the sum of its proper divisors (10586610).

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

6261390 is a wasteful number, since it uses less digits than its factorization.

6261390 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2441 (or 2438 counting only the distinct ones).

The product of its (nonzero) digits is 1944, while the sum is 27.

The square root of 6261390 is about 2502.2769630878. The cubic root of 6261390 is about 184.3134033442.

It can be divided in two parts, 626 and 1390, that added together give a triangular number (2016 = T₆₃).

The spelling of 6261390 in words is "six million, two hundred sixty-one thousand, three hundred ninety".