1316699664 has 80 divisors (see below), whose sum is σ = 3891655680. Its totient is φ = 375788160.

The previous prime is 1316699641. The next prime is 1316699693. The reversal of 1316699664 is 4669966131.

It is a Smith number, since the sum of its digits (51) coincides with the sum of the digits of its prime factors.

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, 441699 + ... + 444669.

It is an arithmetic number, because the mean of its divisors is an integer number (48645696).

Almost surely, 2^1316699664 is an apocalyptic number.

1316699664 is a gapful number since it is divisible by the number (14) formed by its first and last digit.

It is an amenable number.

1316699664 is an abundant number, since it is smaller than the sum of its proper divisors (2574956016).

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

1316699664 is a wasteful number, since it uses less digits than its factorization.

1316699664 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4308 (or 4302 counting only the distinct ones).

The product of its digits is 1259712, while the sum is 51.

The square root of 1316699664 is about 36286.3564442615. The cubic root of 1316699664 is about 1096.0463199917.

The spelling of 1316699664 in words is "one billion, three hundred sixteen million, six hundred ninety-nine thousand, six hundred sixty-four".