2661403 has 2 divisors, whose sum is σ = 2661404. Its totient is φ = 2661402.

The previous prime is 2661397. The next prime is 2661409. The reversal of 2661403 is 3041662.

It is a balanced prime because it is at equal distance from previous prime (2661397) and next prime (2661409).

It is a cyclic number.

It is not a de Polignac number, because 2661403 - 2⁵ = 2661371 is a prime.

It is not a weakly prime, because it can be changed into another prime (2661409) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 1330701 + 1330702.

It is an arithmetic number, because the mean of its divisors is an integer number (1330702).

2^2661403 is an apocalyptic number.

2661403 is a deficient number, since it is larger than the sum of its proper divisors (1).

2661403 is an equidigital number, since it uses as much as digits as its factorization.

2661403 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 864, while the sum is 22.

The square root of 2661403 is about 1631.3807035760. The cubic root of 2661403 is about 138.5809542060.

The spelling of 2661403 in words is "two million, six hundred sixty-one thousand, four hundred three".