2619997 has 2 divisors, whose sum is σ = 2619998. Its totient is φ = 2619996.

The previous prime is 2619973. The next prime is 2620003. The reversal of 2619997 is 7999162.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 1466521 + 1153476 = 1211^2 + 1074^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-2619997 is a prime.

2619997 is a lucky number.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (2619917) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 1309998 + 1309999.

It is an arithmetic number, because the mean of its divisors is an integer number (1309999).

2^2619997 is an apocalyptic number.

It is an amenable number.

2619997 is a deficient number, since it is larger than the sum of its proper divisors (1).

2619997 is an equidigital number, since it uses as much as digits as its factorization.

2619997 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 61236, while the sum is 43.

The square root of 2619997 is about 1618.6404789205. The cubic root of 2619997 is about 137.8585156384.

The spelling of 2619997 in words is "two million, six hundred nineteen thousand, nine hundred ninety-seven".