1660402270 has 32 divisors (see below), whose sum is σ = 3017476800. Its totient is φ = 657803520.

The previous prime is 1660402207. The next prime is 1660402313. The reversal of 1660402270 is 722040661.

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, 461880 + ... + 465460.

It is an arithmetic number, because the mean of its divisors is an integer number (94296150).

Almost surely, 2^1660402270 is an apocalyptic number.

1660402270 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

1660402270 is a deficient number, since it is larger than the sum of its proper divisors (1357074530).

1660402270 is a wasteful number, since it uses less digits than its factorization.

1660402270 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4020.

The product of its (nonzero) digits is 4032, while the sum is 28.

The square root of 1660402270 is about 40748.0339403020. The cubic root of 1660402270 is about 1184.1437838037.

The spelling of 1660402270 in words is "one billion, six hundred sixty million, four hundred two thousand, two hundred seventy".