12613730 has 8 divisors (see below), whose sum is σ = 22704732. Its totient is φ = 5045488.

The previous prime is 12613721. The next prime is 12613823. The reversal of 12613730 is 3731621.

It is a happy number.

It can be written as a sum of positive squares in 2 ways, for example, as 11978521 + 635209 = 3461^2 + 797^2 .

It is a sphenic number, since it is the product of 3 distinct primes.

It is a junction number, because it is equal to n+sod(n) for n = 12613696 and 12613705.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 630677 + ... + 630696.

Almost surely, 2^12613730 is an apocalyptic number.

12613730 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

12613730 is a deficient number, since it is larger than the sum of its proper divisors (10091002).

12613730 is a wasteful number, since it uses less digits than its factorization.

12613730 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1261380.

The product of its (nonzero) digits is 756, while the sum is 23.

The square root of 12613730 is about 3551.5813379395. The cubic root of 12613730 is about 232.7811682983.

The spelling of 12613730 in words is "twelve million, six hundred thirteen thousand, seven hundred thirty".