619397 has 2 divisors, whose sum is σ = 619398. Its totient is φ = 619396.

The previous prime is 619391. The next prime is 619471. The reversal of 619397 is 793916.

619397 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 312481 + 306916 = 559^2 + 554^2 .

It is a cyclic number.

It is not a de Polignac number, because 619397 - 2¹⁴ = 603013 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (619391) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 309698 + 309699.

It is an arithmetic number, because the mean of its divisors is an integer number (309699).

2⁶¹⁹³⁹⁷ is an apocalyptic number.

It is an amenable number.

619397 is a deficient number, since it is larger than the sum of its proper divisors (1).

619397 is an equidigital number, since it uses as much as digits as its factorization.

619397 is an evil number, because the sum of its binary digits is even.

The product of its digits is 10206, while the sum is 35.

The square root of 619397 is about 787.0177888714. The cubic root of 619397 is about 85.2425368205.

The spelling of 619397 in words is "six hundred nineteen thousand, three hundred ninety-seven".