245356613 has 4 divisors (see below), whose sum is σ = 249018720. Its totient is φ = 241694508.

The previous prime is 245356607. The next prime is 245356619. The reversal of 245356613 is 316653542.

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 an emirpimes, since its reverse is a distinct semiprime: 316653542 = 2 ⋅158326771.

It is an interprime number because it is at equal distance from previous prime (245356607) and next prime (245356619).

It is a cyclic number.

It is not a de Polignac number, because 245356613 - 2¹⁰ = 245355589 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (245356619) 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, 1830953 + ... + 1831086.

It is an arithmetic number, because the mean of its divisors is an integer number (62254680).

Almost surely, 2^245356613 is an apocalyptic number.

It is an amenable number.

245356613 is a deficient number, since it is larger than the sum of its proper divisors (3662107).

245356613 is an equidigital number, since it uses as much as digits as its factorization.

245356613 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3662106.

The product of its digits is 64800, while the sum is 35.

The square root of 245356613 is about 15663.8632846434. The cubic root of 245356613 is about 626.0359251193.

The spelling of 245356613 in words is "two hundred forty-five million, three hundred fifty-six thousand, six hundred thirteen".