660180552 has 32 divisors (see below), whose sum is σ = 1677511680. Its totient is φ = 216452160.

The previous prime is 660180527. The next prime is 660180553. The reversal of 660180552 is 255081066.

It is a super-2 number, since 2×660180552² = 871676722478049408, which contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (660180553) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 224008 + ... + 226935.

It is an arithmetic number, because the mean of its divisors is an integer number (52422240).

Almost surely, 2^660180552 is an apocalyptic number.

It is an amenable number.

660180552 is an abundant number, since it is smaller than the sum of its proper divisors (1017331128).

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

660180552 is a wasteful number, since it uses less digits than its factorization.

660180552 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 451013 (or 451009 counting only the distinct ones).

The product of its (nonzero) digits is 14400, while the sum is 33.

The square root of 660180552 is about 25693.9789055724. The cubic root of 660180552 is about 870.7381554050.

It can be divided in two parts, 6601 and 80552, that added together give a triangular number (87153 = T₄₁₇).

The spelling of 660180552 in words is "six hundred sixty million, one hundred eighty thousand, five hundred fifty-two".