6665156 has 12 divisors (see below), whose sum is σ = 12350268. Its totient is φ = 3136512.

The previous prime is 6665123. The next prime is 6665159. The reversal of 6665156 is 6515666.

It can be written as a sum of positive squares in 2 ways, for example, as 5837056 + 828100 = 2416^2 + 910^2 .

It is a hoax number, since the sum of its digits (35) coincides with the sum of the digits of its distinct prime factors.

It is a plaindrome in base 9.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (6665159) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 48941 + ... + 49076.

It is an arithmetic number, because the mean of its divisors is an integer number (1029189).

Almost surely, 2^6665156 is an apocalyptic number.

It is an amenable number.

6665156 is a deficient number, since it is larger than the sum of its proper divisors (5685112).

6665156 is a wasteful number, since it uses less digits than its factorization.

6665156 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 98038 (or 98036 counting only the distinct ones).

The product of its digits is 32400, while the sum is 35.

The square root of 6665156 is about 2581.6963415553. The cubic root of 6665156 is about 188.1929887847.

The spelling of 6665156 in words is "six million, six hundred sixty-five thousand, one hundred fifty-six".