2961663 has 16 divisors (see below), whose sum is σ = 4193280. Its totient is φ = 1854144.

The previous prime is 2961659. The next prime is 2961667. The reversal of 2961663 is 3661692.

It is a happy number.

It is an interprime number because it is at equal distance from previous prime (2961659) and next prime (2961667).

It is not a de Polignac number, because 2961663 - 2² = 2961659 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (2961667) 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, 12595 + ... + 12827.

It is an arithmetic number, because the mean of its divisors is an integer number (262080).

2^2961663 is an apocalyptic number.

2961663 is a deficient number, since it is larger than the sum of its proper divisors (1231617).

2961663 is a wasteful number, since it uses less digits than its factorization.

2961663 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 478.

The product of its digits is 11664, while the sum is 33.

The square root of 2961663 is about 1720.9482851033. The cubic root of 2961663 is about 143.6079711230.

The spelling of 2961663 in words is "two million, nine hundred sixty-one thousand, six hundred sixty-three".