3412638721 has 8 divisors (see below), whose sum is σ = 3423669984. Its totient is φ = 3401620800.

The previous prime is 3412638703. The next prime is 3412638737. The reversal of 3412638721 is 1278362143.

It is a happy number.

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

It is a cyclic number.

It is not a de Polignac number, because 3412638721 - 2²¹ = 3410541569 is a prime.

It is a super-2 number, since 2×3412638721² = 23292206080137031682, which contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (3412638781) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 794646 + ... + 798928.

It is an arithmetic number, because the mean of its divisors is an integer number (427958748).

Almost surely, 2^3412638721 is an apocalyptic number.

It is an amenable number.

3412638721 is a deficient number, since it is larger than the sum of its proper divisors (11031263).

3412638721 is a wasteful number, since it uses less digits than its factorization.

3412638721 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 6671.

The product of its digits is 48384, while the sum is 37.

The square root of 3412638721 is about 58417.7945578229. The cubic root of 3412638721 is about 1505.5555056508. Note that the first 4 decimals are identical.

The spelling of 3412638721 in words is "three billion, four hundred twelve million, six hundred thirty-eight thousand, seven hundred twenty-one".