1166669620 has 12 divisors (see below), whose sum is σ = 2450006244. Its totient is φ = 466667840.

The previous prime is 1166669617. The next prime is 1166669629. The reversal of 1166669620 is 269666611.

It can be written as a sum of positive squares in 2 ways, for example, as 571114404 + 595555216 = 23898^2 + 24404^2 .

It is a super-2 number, since 2×1166669620² = 2722236004461888800, which contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1166669629) 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, 29166721 + ... + 29166760.

It is an arithmetic number, because the mean of its divisors is an integer number (204167187).

Almost surely, 2^1166669620 is an apocalyptic number.

1166669620 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

1166669620 is an abundant number, since it is smaller than the sum of its proper divisors (1283336624).

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

1166669620 is a wasteful number, since it uses less digits than its factorization.

1166669620 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 58333490 (or 58333488 counting only the distinct ones).

The product of its (nonzero) digits is 139968, while the sum is 43.

The square root of 1166669620 is about 34156.5457855445. The cubic root of 1166669620 is about 1052.7274879094.

The spelling of 1166669620 in words is "one billion, one hundred sixty-six million, six hundred sixty-nine thousand, six hundred twenty".