16464377 has 4 divisors (see below), whose sum is σ = 16649460. Its totient is φ = 16279296.

The previous prime is 16464367. The next prime is 16464401. The reversal of 16464377 is 77346461.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 77346461 = 131 ⋅590431.

It can be written as a sum of positive squares in 2 ways, for example, as 5067001 + 11397376 = 2251^2 + 3376^2 .

It is a cyclic number.

It is not a de Polignac number, because 16464377 - 2¹⁶ = 16398841 is a prime.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 16464377.

It is not an unprimeable number, because it can be changed into a prime (16464307) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 92408 + ... + 92585.

It is an arithmetic number, because the mean of its divisors is an integer number (4162365).

Almost surely, 2^16464377 is an apocalyptic number.

It is an amenable number.

16464377 is a deficient number, since it is larger than the sum of its proper divisors (185083).

16464377 is an equidigital number, since it uses as much as digits as its factorization.

16464377 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 185082.

The product of its digits is 84672, while the sum is 38.

The square root of 16464377 is about 4057.6319448664. The cubic root of 16464377 is about 254.3988247460.

The spelling of 16464377 in words is "sixteen million, four hundred sixty-four thousand, three hundred seventy-seven".