70730613 has 6 divisors (see below), whose sum is σ = 102166454. Its totient is φ = 47153736.

The previous prime is 70730593. The next prime is 70730641. The reversal of 70730613 is 31603707.

It can be written as a sum of positive squares in only one way, i.e., 50722884 + 20007729 = 7122^2 + 4473^2 .

It is not a de Polignac number, because 70730613 - 2¹⁴ = 70714229 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 (70730113) by changing a digit.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 3929470 + ... + 3929487.

Almost surely, 2^70730613 is an apocalyptic number.

It is an amenable number.

70730613 is a deficient number, since it is larger than the sum of its proper divisors (31435841).

70730613 is a wasteful number, since it uses less digits than its factorization.

70730613 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 7858963 (or 7858960 counting only the distinct ones).

The product of its (nonzero) digits is 2646, while the sum is 27.

The square root of 70730613 is about 8410.1494041426. The cubic root of 70730613 is about 413.5574105132.

The spelling of 70730613 in words is "seventy million, seven hundred thirty thousand, six hundred thirteen".