7911660 has 24 divisors (see below), whose sum is σ = 22152816. Its totient is φ = 2109760.

The previous prime is 7911653. The next prime is 7911661. The reversal of 7911660 is 661197.

It is a hoax number, since the sum of its digits (30) coincides with the sum of the digits of its distinct prime factors.

It is a Harshad number since it is a multiple of its sum of digits (30).

It is not an unprimeable number, because it can be changed into a prime (7911661) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 65871 + ... + 65990.

It is an arithmetic number, because the mean of its divisors is an integer number (923034).

Almost surely, 2^7911660 is an apocalyptic number.

It is an amenable number.

7911660 is an abundant number, since it is smaller than the sum of its proper divisors (14241156).

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

7911660 is a wasteful number, since it uses less digits than its factorization.

7911660 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 131873 (or 131871 counting only the distinct ones).

The product of its (nonzero) digits is 2268, while the sum is 30.

The square root of 7911660 is about 2812.7673206293. The cubic root of 7911660 is about 199.2611068799.

The spelling of 7911660 in words is "seven million, nine hundred eleven thousand, six hundred sixty".