7861650 has 48 divisors (see below), whose sum is σ = 20650464. Its totient is φ = 1972480.

The previous prime is 7861613. The next prime is 7861657. The reversal of 7861650 is 561687.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (7861657) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 1009 + ... + 4091.

It is an arithmetic number, because the mean of its divisors is an integer number (430218).

Almost surely, 2^7861650 is an apocalyptic number.

It is a practical number, because each smaller number is the sum of distinct divisors of 7861650, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (10325232).

7861650 is an abundant number, since it is smaller than the sum of its proper divisors (12788814).

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

7861650 is a wasteful number, since it uses less digits than its factorization.

7861650 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3115 (or 3110 counting only the distinct ones).

The product of its (nonzero) digits is 10080, while the sum is 33.

The square root of 7861650 is about 2803.8634060881. The cubic root of 7861650 is about 198.8403726503.

The spelling of 7861650 in words is "seven million, eight hundred sixty-one thousand, six hundred fifty".