619901 has 4 divisors (see below), whose sum is σ = 628704. Its totient is φ = 611100.

The previous prime is 619897. The next prime is 619909. The reversal of 619901 is 109916.

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 not a de Polignac number, because 619901 - 2² = 619897 is a prime.

It is a Duffinian number.

It is a Curzon number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (619909) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 4295 + ... + 4436.

It is an arithmetic number, because the mean of its divisors is an integer number (157176).

2⁶¹⁹⁹⁰¹ is an apocalyptic number.

It is an amenable number.

619901 is a deficient number, since it is larger than the sum of its proper divisors (8803).

619901 is an equidigital number, since it uses as much as digits as its factorization.

619901 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 8802.

The product of its (nonzero) digits is 486, while the sum is 26.

The square root of 619901 is about 787.3379198286. The cubic root of 619901 is about 85.2656510166.

The spelling of 619901 in words is "six hundred nineteen thousand, nine hundred one".