660156060 has 48 divisors (see below), whose sum is σ = 1849613472. Its totient is φ = 175929600.

The previous prime is 660156041. The next prime is 660156061. The reversal of 660156060 is 60651066.

It is a Harshad number since it is a multiple of its sum of digits (30).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (660156061) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 140550 + ... + 145170.

It is an arithmetic number, because the mean of its divisors is an integer number (38533614).

Almost surely, 2^660156060 is an apocalyptic number.

660156060 is a gapful number since it is divisible by the number (60) formed by its first and last digit.

It is an amenable number.

660156060 is an abundant number, since it is smaller than the sum of its proper divisors (1189457412).

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

660156060 is a wasteful number, since it uses less digits than its factorization.

660156060 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 7014 (or 7012 counting only the distinct ones).

The product of its (nonzero) digits is 6480, while the sum is 30.

The square root of 660156060 is about 25693.5022914355. The cubic root of 660156060 is about 870.7273874504.

The spelling of 660156060 in words is "six hundred sixty million, one hundred fifty-six thousand, sixty".