16740891 has 8 divisors (see below), whose sum is σ = 24801360. Its totient is φ = 11160576.

The previous prime is 16740853. The next prime is 16740907. The reversal of 16740891 is 19804761.

16740891 is a `hidden beast` number, since 167 + 408 + 91 = 666.

It is a de Polignac number, because none of the positive numbers 2^k-16740891 is a prime.

It is not an unprimeable number, because it can be changed into a prime (16740091) 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, 309990 + ... + 310043.

It is an arithmetic number, because the mean of its divisors is an integer number (3100170).

Almost surely, 2^16740891 is an apocalyptic number.

16740891 is a deficient number, since it is larger than the sum of its proper divisors (8060469).

16740891 is an equidigital number, since it uses as much as digits as its factorization.

16740891 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 620042 (or 620036 counting only the distinct ones).

The product of its (nonzero) digits is 12096, while the sum is 36.

The square root of 16740891 is about 4091.5633931298. The cubic root of 16740891 is about 255.8151079925.

The spelling of 16740891 in words is "sixteen million, seven hundred forty thousand, eight hundred ninety-one".