661060332 has 24 divisors (see below), whose sum is σ = 1713860400. Its totient is φ = 220353408.

The previous prime is 661060313. The next prime is 661060357. The reversal of 661060332 is 233060166.

It is a Harshad number since it is a multiple of its sum of digits (27).

It is a junction number, because it is equal to n+sod(n) for n = 661060296 and 661060305.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 3060357 + ... + 3060572.

It is an arithmetic number, because the mean of its divisors is an integer number (71410850).

Almost surely, 2^661060332 is an apocalyptic number.

It is an amenable number.

661060332 is an abundant number, since it is smaller than the sum of its proper divisors (1052800068).

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

661060332 is a wasteful number, since it uses less digits than its factorization.

661060332 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 6120942 (or 6120934 counting only the distinct ones).

The product of its (nonzero) digits is 3888, while the sum is 27.

The square root of 661060332 is about 25711.0935590068. The cubic root of 661060332 is about 871.1247758893.

The spelling of 661060332 in words is "six hundred sixty-one million, sixty thousand, three hundred thirty-two".