102070613 has 4 divisors (see below), whose sum is σ = 102222060. Its totient is φ = 101919168.

The previous prime is 102070597. The next prime is 102070621. The reversal of 102070613 is 316070201.

It is a happy number.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 316070201 = 4253 ⋅74317.

It can be written as a sum of positive squares in 2 ways, for example, as 101465329 + 605284 = 10073^2 + 778^2 .

It is a cyclic number.

It is not a de Polignac number, because 102070613 - 2⁴ = 102070597 is a prime.

It is a Duffinian number.

It is a Curzon number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (102070643) 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, 74708 + ... + 76061.

It is an arithmetic number, because the mean of its divisors is an integer number (25555515).

Almost surely, 2^102070613 is an apocalyptic number.

It is an amenable number.

102070613 is a deficient number, since it is larger than the sum of its proper divisors (151447).

102070613 is an equidigital number, since it uses as much as digits as its factorization.

102070613 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 151446.

The product of its (nonzero) digits is 252, while the sum is 20.

The square root of 102070613 is about 10103.0001979610. Note that the first 3 decimals coincide. The cubic root of 102070613 is about 467.3406672941.

The spelling of 102070613 in words is "one hundred two million, seventy thousand, six hundred thirteen".