7661250 has 80 divisors (see below), whose sum is σ = 21368160. Its totient is φ = 2034000.

The previous prime is 7661239. The next prime is 7661279. The reversal of 7661250 is 521667.

7661250 is digitally balanced in base 4, because in such base it contains all the possibile digits an equal number of times.

It is a Harshad number since it is a multiple of its sum of digits (27).

It is an unprimeable number.

It is a polite number, since it can be written in 39 ways as a sum of consecutive naturals, for example, 33637 + ... + 33863.

It is an arithmetic number, because the mean of its divisors is an integer number (267102).

Almost surely, 2^7661250 is an apocalyptic number.

It is a practical number, because each smaller number is the sum of distinct divisors of 7661250, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (10684080).

7661250 is an abundant number, since it is smaller than the sum of its proper divisors (13706910).

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

7661250 is a wasteful number, since it uses less digits than its factorization.

7661250 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 258 (or 237 counting only the distinct ones).

The product of its (nonzero) digits is 2520, while the sum is 27.

The square root of 7661250 is about 2767.8963130869. The cubic root of 7661250 is about 197.1362744224.

It can be divided in two parts, 766 and 1250, that added together give a triangular number (2016 = T₆₃).

The spelling of 7661250 in words is "seven million, six hundred sixty-one thousand, two hundred fifty".