11643642 has 32 divisors (see below), whose sum is σ = 26006400. Its totient is φ = 3861504.

The previous prime is 11643629. The next prime is 11643659. The reversal of 11643642 is 24634611.

11643642 is a `hidden beast` number, since 1 + 16 + 4 + 3 + 642 = 666.

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 15 ways as a sum of consecutive naturals, for example, 13459 + ... + 14297.

It is an arithmetic number, because the mean of its divisors is an integer number (812700).

Almost surely, 2^11643642 is an apocalyptic number.

11643642 is an abundant number, since it is smaller than the sum of its proper divisors (14362758).

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

11643642 is a wasteful number, since it uses less digits than its factorization.

11643642 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1107 (or 1101 counting only the distinct ones).

The product of its digits is 3456, while the sum is 27.

The square root of 11643642 is about 3412.2781246551. The cubic root of 11643642 is about 226.6537704120.

The spelling of 11643642 in words is "eleven million, six hundred forty-three thousand, six hundred forty-two".