620497 has 4 divisors (see below), whose sum is σ = 622080. Its totient is φ = 618916.

The previous prime is 620491. The next prime is 620507. The reversal of 620497 is 794026.

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, and also a brilliant number, because the two primes have the same length, and also an emirpimes, since its reverse is a distinct semiprime: 794026 = 2 ⋅397013.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-620497 is a prime.

It is a Duffinian number.

620497 is a lucky number.

It is not an unprimeable number, because it can be changed into a prime (620491) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 288 + ... + 1150.

It is an arithmetic number, because the mean of its divisors is an integer number (155520).

2⁶²⁰⁴⁹⁷ is an apocalyptic number.

It is an amenable number.

620497 is a deficient number, since it is larger than the sum of its proper divisors (1583).

620497 is an equidigital number, since it uses as much as digits as its factorization.

620497 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1582.

The product of its (nonzero) digits is 3024, while the sum is 28.

The square root of 620497 is about 787.7163194958. The cubic root of 620497 is about 85.2929683089.

It can be divided in two parts, 6 and 20497, that added together give a triangular number (20503 = T₂₀₂).

The spelling of 620497 in words is "six hundred twenty thousand, four hundred ninety-seven".