6402619 has 2 divisors, whose sum is σ = 6402620. Its totient is φ = 6402618.

The previous prime is 6402593. The next prime is 6402629. The reversal of 6402619 is 9162046.

It is a strong prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-6402619 is a prime.

It is a super-2 number, since 2×6402619² = 81987060118322, which contains 22 as substring.

It is not a weakly prime, because it can be changed into another prime (6402629) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 3201309 + 3201310.

It is an arithmetic number, because the mean of its divisors is an integer number (3201310).

Almost surely, 2^6402619 is an apocalyptic number.

6402619 is a deficient number, since it is larger than the sum of its proper divisors (1).

6402619 is an equidigital number, since it uses as much as digits as its factorization.

6402619 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 2592, while the sum is 28.

The square root of 6402619 is about 2530.3397005145. The cubic root of 6402619 is about 185.6888755598.

It can be divided in two parts, 6402 and 619, that added together give a triangular number (7021 = T₁₁₈).

The spelling of 6402619 in words is "six million, four hundred two thousand, six hundred nineteen".