1340511660 has 96 divisors (see below), whose sum is σ = 4314340800. Its totient is φ = 345139200.

The previous prime is 1340511647. The next prime is 1340511673. The reversal of 1340511660 is 661150431.

It is an interprime number because it is at equal distance from previous prime (1340511647) and next prime (1340511673).

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

It is an unprimeable number.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 27141 + ... + 58460.

It is an arithmetic number, because the mean of its divisors is an integer number (44941050).

Almost surely, 2^1340511660 is an apocalyptic number.

1340511660 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

1340511660 is an abundant number, since it is smaller than the sum of its proper divisors (2973829140).

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

1340511660 is a wasteful number, since it uses less digits than its factorization.

1340511660 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 85648 (or 85640 counting only the distinct ones).

The product of its (nonzero) digits is 2160, while the sum is 27.

The square root of 1340511660 is about 36612.9985114576. The cubic root of 1340511660 is about 1102.6140749195.

The spelling of 1340511660 in words is "one billion, three hundred forty million, five hundred eleven thousand, six hundred sixty".