16640377 has 8 divisors (see below), whose sum is σ = 18023040. Its totient is φ = 15272400.

The previous prime is 16640359. The next prime is 16640387. The reversal of 16640377 is 77304661.

It is a sphenic number, since it is the product of 3 distinct primes.

It is not a de Polignac number, because 16640377 - 2⁷ = 16640249 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (16640317) 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 7 ways as a sum of consecutive naturals, for example, 1249 + ... + 5902.

It is an arithmetic number, because the mean of its divisors is an integer number (2252880).

Almost surely, 2^16640377 is an apocalyptic number.

It is an amenable number.

16640377 is a deficient number, since it is larger than the sum of its proper divisors (1382663).

16640377 is a wasteful number, since it uses less digits than its factorization.

16640377 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 7343.

The product of its (nonzero) digits is 21168, while the sum is 34.

The square root of 16640377 is about 4079.2618204768. The cubic root of 16640377 is about 255.3020999880.

The spelling of 16640377 in words is "sixteen million, six hundred forty thousand, three hundred seventy-seven".