1217166076 has 72 divisors (see below), whose sum is σ = 2578625280. Its totient is φ = 500637312.

The previous prime is 1217166073. The next prime is 1217166077. The reversal of 1217166076 is 6706617121.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1217166073) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 1119205 + ... + 1120291.

It is an arithmetic number, because the mean of its divisors is an integer number (35814240).

Almost surely, 2^1217166076 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 1217166076, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (1289312640).

1217166076 is an abundant number, since it is smaller than the sum of its proper divisors (1361459204).

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

1217166076 is a wasteful number, since it uses less digits than its factorization.

1217166076 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1331 (or 1322 counting only the distinct ones).

The product of its (nonzero) digits is 21168, while the sum is 37.

The square root of 1217166076 is about 34887.9073032476. The cubic root of 1217166076 is about 1067.7017302176.

The spelling of 1217166076 in words is "one billion, two hundred seventeen million, one hundred sixty-six thousand, seventy-six".