12347690 has 8 divisors (see below), whose sum is σ = 22225860. Its totient is φ = 4939072.

The previous prime is 12347669. The next prime is 12347717. The reversal of 12347690 is 9674321.

12347690 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It can be written as a sum of positive squares in 2 ways, for example, as 10817521 + 1530169 = 3289^2 + 1237^2 .

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

It is a super-2 number, since 2×12347690² = 304930896672200, which contains 22 as substring.

It is an alternating number because its digits alternate between odd and even.

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, 617375 + ... + 617394.

Almost surely, 2^12347690 is an apocalyptic number.

12347690 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

12347690 is a deficient number, since it is larger than the sum of its proper divisors (9878170).

12347690 is a wasteful number, since it uses less digits than its factorization.

12347690 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1234776.

The product of its (nonzero) digits is 9072, while the sum is 32.

The square root of 12347690 is about 3513.9280015390. The cubic root of 12347690 is about 231.1329731709.

The spelling of 12347690 in words is "twelve million, three hundred forty-seven thousand, six hundred ninety".