16613481 has 16 divisors (see below), whose sum is σ = 22999424. Its totient is φ = 10658304.

The previous prime is 16613479. The next prime is 16613483. The reversal of 16613481 is 18431661.

16613481 is digitally balanced in base 2 and base 4, because in such bases it contains all the possibile digits an equal number of times.

It is an interprime number because it is at equal distance from previous prime (16613479) and next prime (16613483).

It is not a de Polignac number, because 16613481 - 2¹ = 16613479 is a prime.

It is a super-2 number, since 2×16613481² = 552015501874722, which contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (16613483) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 9996 + ... + 11538.

It is an arithmetic number, because the mean of its divisors is an integer number (1437464).

Almost surely, 2^16613481 is an apocalyptic number.

It is an amenable number.

16613481 is a deficient number, since it is larger than the sum of its proper divisors (6385943).

16613481 is a wasteful number, since it uses less digits than its factorization.

16613481 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1680.

The product of its digits is 3456, while the sum is 30.

The square root of 16613481 is about 4075.9638124007. The cubic root of 16613481 is about 255.1644767413.

The spelling of 16613481 in words is "sixteen million, six hundred thirteen thousand, four hundred eighty-one".