264619 has 2 divisors, whose sum is σ = 264620. Its totient is φ = 264618.

The previous prime is 264601. The next prime is 264631. The reversal of 264619 is 916462.

It is a strong prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-264619 is a prime.

It is a super-2 number, since 2×264619² = 140046430322, which contains 22 as substring.

It is not a weakly prime, because it can be changed into another prime (264659) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 132309 + 132310.

It is an arithmetic number, because the mean of its divisors is an integer number (132310).

2²⁶⁴⁶¹⁹ is an apocalyptic number.

264619 is a deficient number, since it is larger than the sum of its proper divisors (1).

264619 is an equidigital number, since it uses as much as digits as its factorization.

264619 is an evil number, because the sum of its binary digits is even.

The product of its digits is 2592, while the sum is 28.

The square root of 264619 is about 514.4113140280. The cubic root of 264619 is about 64.2007854383.

The spelling of 264619 in words is "two hundred sixty-four thousand, six hundred nineteen".