1660956628 has 24 divisors (see below), whose sum is σ = 2935296000. Its totient is φ = 822341280.

The previous prime is 1660956623. The next prime is 1660956637. The reversal of 1660956628 is 8266590661.

It is a happy number.

It is a hoax number, since the sum of its digits (49) coincides with the sum of the digits of its distinct prime factors.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1660956623) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 165498 + ... + 175246.

It is an arithmetic number, because the mean of its divisors is an integer number (122304000).

Almost surely, 2^1660956628 is an apocalyptic number.

It is an amenable number.

1660956628 is a deficient number, since it is larger than the sum of its proper divisors (1274339372).

1660956628 is a wasteful number, since it uses less digits than its factorization.

1660956628 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 10167 (or 10165 counting only the distinct ones).

The product of its (nonzero) digits is 933120, while the sum is 49.

The square root of 1660956628 is about 40754.8356394674. The cubic root of 1660956628 is about 1184.2755523817.

It can be divided in two parts, 16609 and 56628, that added together give a palindrome (73237).

The spelling of 1660956628 in words is "one billion, six hundred sixty million, nine hundred fifty-six thousand, six hundred twenty-eight".