152668613 has 4 divisors (see below), whose sum is σ = 153512268. Its totient is φ = 151824960.

The previous prime is 152668559. The next prime is 152668627. The reversal of 152668613 is 316866251.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 316866251 = 13 ⋅24374327.

It can be written as a sum of positive squares in 2 ways, for example, as 5943844 + 146724769 = 2438^2 + 12113^2 .

It is a cyclic number.

It is not a de Polignac number, because 152668613 - 2¹⁴ = 152652229 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 (152668693) 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, 421556 + ... + 421917.

It is an arithmetic number, because the mean of its divisors is an integer number (38378067).

Almost surely, 2^152668613 is an apocalyptic number.

It is an amenable number.

152668613 is a deficient number, since it is larger than the sum of its proper divisors (843655).

152668613 is an equidigital number, since it uses as much as digits as its factorization.

152668613 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 843654.

The product of its digits is 51840, while the sum is 38.

The square root of 152668613 is about 12355.9140900218. The cubic root of 152668613 is about 534.4616974708.

The spelling of 152668613 in words is "one hundred fifty-two million, six hundred sixty-eight thousand, six hundred thirteen".