16961145 has 16 divisors (see below), whose sum is σ = 27293760. Its totient is φ = 8993984.

The previous prime is 16961107. The next prime is 16961149. The reversal of 16961145 is 54116961.

It is a cyclic number.

It is not a de Polignac number, because 16961145 - 2⁶ = 16961081 is a prime.

It is a super-2 number, since 2×16961145² = 575360879422050, which contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (16961149) 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, 474 + ... + 5843.

It is an arithmetic number, because the mean of its divisors is an integer number (1705860).

Almost surely, 2^16961145 is an apocalyptic number.

16961145 is a gapful number since it is divisible by the number (15) formed by its first and last digit.

It is an amenable number.

16961145 is a deficient number, since it is larger than the sum of its proper divisors (10332615).

16961145 is a wasteful number, since it uses less digits than its factorization.

16961145 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 6504.

The product of its digits is 6480, while the sum is 33.

The square root of 16961145 is about 4118.3910693376. The cubic root of 16961145 is about 256.9321132648.

The spelling of 16961145 in words is "sixteen million, nine hundred sixty-one thousand, one hundred forty-five".