1321678601 has 8 divisors (see below), whose sum is σ = 1380248640. Its totient is φ = 1263200752.

The previous prime is 1321678597. The next prime is 1321678607. The reversal of 1321678601 is 1068761231.

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 1321678601 - 2² = 1321678597 is a prime.

It is a Duffinian number.

It is a Curzon number.

It is not an unprimeable number, because it can be changed into a prime (1321678607) 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, 7115 + ... + 51903.

It is an arithmetic number, because the mean of its divisors is an integer number (172531080).

Almost surely, 2^1321678601 is an apocalyptic number.

It is an amenable number.

1321678601 is a deficient number, since it is larger than the sum of its proper divisors (58570039).

1321678601 is a wasteful number, since it uses less digits than its factorization.

1321678601 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 46095.

The product of its (nonzero) digits is 12096, while the sum is 35.

The square root of 1321678601 is about 36354.8978956069. The cubic root of 1321678601 is about 1097.4261035095.

The spelling of 1321678601 in words is "one billion, three hundred twenty-one million, six hundred seventy-eight thousand, six hundred one".