7991610 has 64 divisors (see below), whose sum is σ = 21320064. Its totient is φ = 1900800.

The previous prime is 7991591. The next prime is 7991623. The reversal of 7991610 is 161997.

It is a Harshad number since it is a multiple of its sum of digits (33).

It is a Curzon number.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 19932 + ... + 20328.

It is an arithmetic number, because the mean of its divisors is an integer number (333126).

Almost surely, 2^7991610 is an apocalyptic number.

It is a practical number, because each smaller number is the sum of distinct divisors of 7991610, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (10660032).

7991610 is an abundant number, since it is smaller than the sum of its proper divisors (13328454).

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

7991610 is a wasteful number, since it uses less digits than its factorization.

7991610 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 479.

The product of its (nonzero) digits is 3402, while the sum is 33.

The square root of 7991610 is about 2826.9435792035. The cubic root of 7991610 is about 199.9300588774.

The spelling of 7991610 in words is "seven million, nine hundred ninety-one thousand, six hundred ten".