7961646 has 64 divisors (see below), whose sum is σ = 20920320. Its totient is φ = 1956960.

The previous prime is 7961621. The next prime is 7961651. The reversal of 7961646 is 6461697.

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, 8325 + ... + 9231.

It is an arithmetic number, because the mean of its divisors is an integer number (326880).

Almost surely, 2^7961646 is an apocalyptic number.

It is a practical number, because each smaller number is the sum of distinct divisors of 7961646, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (10460160).

7961646 is an abundant number, since it is smaller than the sum of its proper divisors (12958674).

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

7961646 is a wasteful number, since it uses less digits than its factorization.

7961646 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 949.

The product of its digits is 54432, while the sum is 39.

The square root of 7961646 is about 2821.6388854706. The cubic root of 7961646 is about 199.6798711945.

It can be divided in two parts, 796 and 1646, that added together give a palindrome (2442).

The spelling of 7961646 in words is "seven million, nine hundred sixty-one thousand, six hundred forty-six".