7661610 has 96 divisors (see below), whose sum is σ = 22239360. Its totient is φ = 1814400.

The previous prime is 7661603. The next prime is 7661639. The reversal of 7661610 is 161667.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 47 ways as a sum of consecutive naturals, for example, 70236 + ... + 70344.

It is an arithmetic number, because the mean of its divisors is an integer number (231660).

Almost surely, 2^7661610 is an apocalyptic number.

It is a practical number, because each smaller number is the sum of distinct divisors of 7661610, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (11119680).

7661610 is an abundant number, since it is smaller than the sum of its proper divisors (14577750).

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

7661610 is a wasteful number, since it uses less digits than its factorization.

7661610 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 204 (or 201 counting only the distinct ones).

The product of its (nonzero) digits is 1512, while the sum is 27.

The square root of 7661610 is about 2767.9613436607. The cubic root of 7661610 is about 197.1393621669.

The spelling of 7661610 in words is "seven million, six hundred sixty-one thousand, six hundred ten".