2913661 has 4 divisors (see below), whose sum is σ = 2920000. Its totient is φ = 2907324.

The previous prime is 2913641. The next prime is 2913697. The reversal of 2913661 is 1663192.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-2913661 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (2913641) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 2421 + ... + 3418.

It is an arithmetic number, because the mean of its divisors is an integer number (730000).

2^2913661 is an apocalyptic number.

It is an amenable number.

2913661 is a deficient number, since it is larger than the sum of its proper divisors (6339).

2913661 is an equidigital number, since it uses as much as digits as its factorization.

2913661 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 6338.

The product of its digits is 1944, while the sum is 28.

The square root of 2913661 is about 1706.9449317421. The cubic root of 2913661 is about 142.8278855799.

The spelling of 2913661 in words is "two million, nine hundred thirteen thousand, six hundred sixty-one".