621097 has 2 divisors, whose sum is σ = 621098. Its totient is φ = 621096.

The previous prime is 621083. The next prime is 621113. The reversal of 621097 is 790126.

621097 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., 488601 + 132496 = 699^2 + 364^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-621097 is a prime.

It is a super-2 number, since 2×621097² = 771522966818, which contains 22 as substring.

It is not a weakly prime, because it can be changed into another prime (621007) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 310548 + 310549.

It is an arithmetic number, because the mean of its divisors is an integer number (310549).

2⁶²¹⁰⁹⁷ is an apocalyptic number.

It is an amenable number.

621097 is a deficient number, since it is larger than the sum of its proper divisors (1).

621097 is an equidigital number, since it uses as much as digits as its factorization.

621097 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 756, while the sum is 25.

The square root of 621097 is about 788.0970752388. The cubic root of 621097 is about 85.3204512753.

The spelling of 621097 in words is "six hundred twenty-one thousand, ninety-seven".