16505964 has 24 divisors (see below), whose sum is σ = 42793520. Its totient is φ = 5501952.

The previous prime is 16505921. The next prime is 16505969. The reversal of 16505964 is 46950561.

16505964 is a `hidden beast` number, since 1 + 65 + 0 + 596 + 4 = 666.

It is a Harshad number since it is a multiple of its sum of digits (36).

It is not an unprimeable number, because it can be changed into a prime (16505969) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 76309 + ... + 76524.

Almost surely, 2^16505964 is an apocalyptic number.

It is an amenable number.

16505964 is an abundant number, since it is smaller than the sum of its proper divisors (26287556).

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

16505964 is a wasteful number, since it uses less digits than its factorization.

16505964 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 152846 (or 152838 counting only the distinct ones).

The product of its (nonzero) digits is 32400, while the sum is 36.

The square root of 16505964 is about 4062.7532536446. The cubic root of 16505964 is about 254.6128380820.

The spelling of 16505964 in words is "sixteen million, five hundred five thousand, nine hundred sixty-four".