11710640 has 20 divisors (see below), whose sum is σ = 27227424. Its totient is φ = 4684224.

The previous prime is 11710627. The next prime is 11710649. The reversal of 11710640 is 4601711.

It is a tau number, because it is divible by the number of its divisors (20).

It is a Harshad number since it is a multiple of its sum of digits (20).

It is not an unprimeable number, because it can be changed into a prime (11710649) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 73112 + ... + 73271.

Almost surely, 2^11710640 is an apocalyptic number.

11710640 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

11710640 is an abundant number, since it is smaller than the sum of its proper divisors (15516784).

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

11710640 is a wasteful number, since it uses less digits than its factorization.

11710640 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 146396 (or 146390 counting only the distinct ones).

The product of its (nonzero) digits is 168, while the sum is 20.

The square root of 11710640 is about 3422.0812380772. The cubic root of 11710640 is about 227.0876643302.

The spelling of 11710640 in words is "eleven million, seven hundred ten thousand, six hundred forty".