16720495 has 8 divisors (see below), whose sum is σ = 21888720. Its totient is φ = 12160320.

The previous prime is 16720481. The next prime is 16720511. The reversal of 16720495 is 59402761.

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

It is not a de Polignac number, because 16720495 - 2¹³ = 16712303 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 16720495.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 151950 + ... + 152059.

It is an arithmetic number, because the mean of its divisors is an integer number (2736090).

Almost surely, 2^16720495 is an apocalyptic number.

16720495 is a deficient number, since it is larger than the sum of its proper divisors (5168225).

16720495 is a wasteful number, since it uses less digits than its factorization.

16720495 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 304025.

The product of its (nonzero) digits is 15120, while the sum is 34.

The square root of 16720495 is about 4089.0701877077. The cubic root of 16720495 is about 255.7111763419.

The spelling of 16720495 in words is "sixteen million, seven hundred twenty thousand, four hundred ninety-five".