66152660 has 48 divisors (see below), whose sum is σ = 160707456. Its totient is φ = 22403712.

The previous prime is 66152599. The next prime is 66152689. The reversal of 66152660 is 6625166.

66152660 = T₄₃₄₄ + T₄₃₄₅ + ... + T₄₃₅₀.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 8774 + ... + 14466.

It is an arithmetic number, because the mean of its divisors is an integer number (3348072).

Almost surely, 2^66152660 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 66152660, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (80353728).

66152660 is an abundant number, since it is smaller than the sum of its proper divisors (94554796).

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

66152660 is a wasteful number, since it uses less digits than its factorization.

66152660 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 5792 (or 5790 counting only the distinct ones).

The product of its (nonzero) digits is 12960, while the sum is 32.

The square root of 66152660 is about 8133.4285513552. The cubic root of 66152660 is about 404.4353458239.

The spelling of 66152660 in words is "sixty-six million, one hundred fifty-two thousand, six hundred sixty".