7166520 has 96 divisors (see below), whose sum is σ = 24682320. Its totient is φ = 1797120.

The previous prime is 7166507. The next prime is 7166531. The reversal of 7166520 is 256617.

7166520 = T₂₅₆ + T₂₅₇ + ... + T₃₉₀.

7166520 is a `hidden beast` number, since 7 + 1 + 6 + 652 + 0 = 666.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 5535 + ... + 6705.

Almost surely, 2^7166520 is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 7166520, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (12341160).

7166520 is an abundant number, since it is smaller than the sum of its proper divisors (17515800).

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

7166520 is a wasteful number, since it uses less digits than its factorization.

7166520 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1205 (or 1198 counting only the distinct ones).

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

The square root of 7166520 is about 2677.0356740245. The cubic root of 7166520 is about 192.7981100921.

Subtracting from 7166520 its reverse (256617), we obtain a triangular number (6909903 = T₃₇₁₇).

The spelling of 7166520 in words is "seven million, one hundred sixty-six thousand, five hundred twenty".